eclipse 使用maven 搭建spring + springMVC + spring Data + jpa 框架

逃离我推掉我的手 2023-10-17 11:26 12阅读 0赞

第一项目结构展示：

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项目中所引用到的jar文件

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
      <groupId>springdataSample</groupId>
      <artifactId>springdataSample</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      
      <dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>3.8.1</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>3.1.0</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-orm</artifactId>
                <version>4.1.3.RELEASE</version>
            </dependency>
    
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
                <version>4.3.11.Final</version>
            </dependency>
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-entitymanager</artifactId>
                <version>4.3.11.Final</version>
            </dependency>
            <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-ehcache</artifactId>
                <version>4.3.11.Final</version>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.35</version>
            </dependency>
            <dependency>
                <groupId>commons-dbcp</groupId>
                <artifactId>commons-dbcp</artifactId>
                <version>1.2.2</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>1.2</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>1.7.12</version>
            </dependency>
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp</artifactId>
                <version>0.8.0.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp-spring</artifactId>
                <version>0.8.0.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>com.jolbox</groupId>
                <artifactId>bonecp-provider</artifactId>
                <version>0.8.0-alpha1</version>
            </dependency>
            <dependency>
                <groupId>taglibs</groupId>
                <artifactId>standard</artifactId>
                <version>1.1.2</version>
            </dependency>
            <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>1.8.7</version>
            </dependency>
            <dependency>
                <groupId>cglib</groupId>
                <artifactId>cglib-nodep</artifactId>
                <version>3.2.0</version>
            </dependency>
            <dependency>
                <groupId>commons-collections</groupId>
                <artifactId>commons-collections</artifactId>
                <version>3.2.1</version>
            </dependency>
            <dependency>
                <groupId>ant</groupId>
                <artifactId>ant</artifactId>
                <version>1.6.5</version>
            </dependency>
            <dependency>
                <groupId>org.apache.avro</groupId>
                <artifactId>avro</artifactId>
                <version>1.7.7</version>
            </dependency>
            <dependency>
                <groupId>commons-beanutils</groupId>
                <artifactId>commons-beanutils</artifactId>
                <version>1.9.2</version>
            </dependency>
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>1.3.1</version>
            </dependency>
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>2.4</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>3.4</version>
            </dependency>
            <dependency>
                <groupId>dom4j</groupId>
                <artifactId>dom4j</artifactId>
                <version>1.6.1</version>
            </dependency>
            <dependency>
                <groupId>net.sf.ezmorph</groupId>
                <artifactId>ezmorph</artifactId>
                <version>1.0.6</version>
            </dependency>
            <dependency>
                <groupId>org.freemarker</groupId>
                <artifactId>freemarker</artifactId>
                <version>2.3.23</version>
            </dependency>
            <dependency>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
                <version>18.0</version>
            </dependency>
            <dependency>
                <groupId>org.javassist</groupId>
                <artifactId>javassist</artifactId>
                <version>3.20.0-GA</version>
            </dependency>
            <dependency>
                <groupId>org.jboss.logging</groupId>
                <artifactId>jboss-logging</artifactId>
                <version>3.3.0.Final</version>
            </dependency>
            
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>2.5.0</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
                <version>2.5.0</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
                <version>2.5.0</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-jpa</artifactId>
                <version>1.7.1.RELEASE</version>
            </dependency>
            
        </dependencies>
        <build>
            <plugins>
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>2.3.2</version>
                    <configuration>
                        <source>1.7</source>
                        <target>1.7</target>
                        <encoding>utf8</encoding>
                    </configuration>
                </plugin>
            </plugins>
           
        </build>
    </project>

spring配置文件applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:cache="http://www.springframework.org/schema/cache"
        xmlns:jaxws="http://cxf.apache.org/jaxws"
        xmlns:jpa="http://www.springframework.org/schema/data/jpa"
        xsi:schemaLocation="
                        http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
                        http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
                        http://www.springframework.org/schema/context      
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/cache 
                        http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
                        http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd 
                        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd" 
                        default-lazy-init="true">
    
        
        <context:component-scan base-package="com.zzg.springdata">
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
        </context:component-scan>
    
        
        <context:property-placeholder location="classpath:jdbc.properties" />
    
        
        
        <bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource"
            destroy-method="close">
            
            <property name="driverClass" value="${jdbc.driverClassName}" />
            
            <property name="jdbcUrl" value="${jdbc.url}" />
            
            <property name="username" value="${jdbc.username}" />
            
            <property name="password" value="${jdbc.password}" />
        </bean>
    
        
        <bean id="entityManagerFactory"
            class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter" />
            
            <property name="packagesToScan" value="com.zzg.springdata.model" />
    
            <property name="jpaProperties">
                <props>
                    <prop key="hibernate.current_session_context_class">thread</prop>
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.show_sql">false</prop>
                    <prop key="hibernate.format_sql">false</prop>
                    
                    
                    <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
                    
                </props>
            </property>
        </bean>
        
        
        <bean id="hibernateJpaVendorAdapter"
            class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="databasePlatform" value="${hibernate.dialect}"/>
        </bean>
        
        
        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
            <property name="entityManagerFactory" ref="entityManagerFactory"/>
        </bean>
    
        
        <jpa:repositories base-package="com.zzg.springdata.dao"  transaction-manager-ref="transactionManager" entity-manager-factory-ref="entityManagerFactory"/>
        
        
        <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
    </beans>

springMVC配置文件（spring-mvc.xml）

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation=" 
                    http://www.springframework.org/schema/beans 
                    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
                    http://www.springframework.org/schema/context 
                    http://www.springframework.org/schema/context/spring-context-3.1.xsd 
                    http://www.springframework.org/schema/mvc 
                    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd" >
        
        
        <mvc:annotation-driven />
        
        <context:component-scan base-package="com.zzg.springdata.controller" use-default-filters="false">
            <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
            <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
        </context:component-scan>
        
        
        
        
        
        
        
        <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">    
            <property name="supportedMediaTypes">    
                <list>
                    <value>application/x-www-form-urlencoded;charset=UTF-8</value>
                </list>
            </property>
        </bean>
     
         
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
             <property name="messageConverters">
                <list>
                    <ref bean="mappingJacksonHttpMessageConverter" />
                </list>
            </property>
        </bean>
        
         
          
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            <property name="prefix" value="/" />
            <property name="suffix" value=".html" />
        </bean>
        
        
    
        
        
        <mvc:resources location="/css/" mapping="/css/**" />
        
        <mvc:resources location="/images/" mapping="/images/**" />
        <mvc:resources location="/ATTACHMENT/" mapping="/ATTACHMENT/**" />
        
    </beans>

MySQL 连接配置文件

jdbc.driverClassName=com.mysql.jdbc.Driver
    
    jdbc.url=jdbc\:mysql\://localhost\:3306/cms_website?useUnicode\=true&characterEncoding\=UTF-8
    
    jdbc.username=root
    
    jdbc.password=123456
    
    hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
    
    BoneCP.idleConnectionTestPeriod=60
    
    BoneCP.idleMaxAge=60
    
    BoneCP.maxConnectionsPerPartition=5
    
    BoneCP.minConnectionsPerPartition=1
    
    BoneCP.partitionCount=3
    
    BoneCP.acquireIncrement=2  
    
    BoneCP.statementsCacheSize=0 
      
    BoneCP.releaseHelperThreads=3

web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
      <display-name>Archetype Created Web Application</display-name>
      <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:applicationContext*.xml</param-value>
        </context-param>
        
           
          
        <listener>  
            <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
        </listener>  
        
           
          
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        
        
        <filter>
            <filter-name>characterEncodingFilter</filter-name>
            <filter-class>
                org.springframework.web.filter.CharacterEncodingFilter
            </filter-class>
            <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        
        
        
        <filter>
            <filter-name>hibernateFilter</filter-name>
            <filter-class>
                org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
            </filter-class>
        </filter>
        <filter-mapping>
            <filter-name>hibernateFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        
        
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.jpg</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.png</url-pattern>    
        </servlet-mapping>     
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.gif</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.woff</url-pattern>    
        </servlet-mapping> 
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.ttf</url-pattern>    
        </servlet-mapping>          
        <servlet-mapping>  
            <servlet-name>default</servlet-name> 
            <url-pattern>*.map</url-pattern>    
        </servlet-mapping>      
        <servlet-mapping>      
            <servlet-name>default</servlet-name>   
            <url-pattern>*.js</url-pattern>   
        </servlet-mapping>  
        <servlet-mapping>       
            <servlet-name>default</servlet-name>      
            <url-pattern>*.css</url-pattern>     
        </servlet-mapping>  
        <servlet-mapping>       
            <servlet-name>default</servlet-name>      
            <url-pattern>*.html</url-pattern>     
        </servlet-mapping>
        
        
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <servlet-class>
                org.springframework.web.servlet.DispatcherServlet
            </servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath*:/spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
        <welcome-file-list>
            <welcome-file>/index.html</welcome-file>
        </welcome-file-list>
    </web-app>

1、实体层（model）

package com.zzg.springdata.model;
    
    import java.io.Serializable;
    
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.Table;
    
    @Entity
    @Table(name = "tb_user")
    public class User implements Serializable {
    
    	/**
    	 * 
    	 */
    	private static final long serialVersionUID = 1L;
    	@Id
    	@GeneratedValue(strategy = GenerationType.IDENTITY)
    	@Column(name = "id")
    	private Long id;
    	
    	@Column(name = "create_time")
    	private String createTime;
    	
    	@Column(name = "last_login_time")
    	private String lastLoginTime;
    	
    	@Column(name = "login_name")
    	private String loginName;
    	
    	@Column(name = "password")
    	private String password;
    	
    	@Column(name = "real_name")
    	private String realName;
    	
    	@Column(name = "role")
    	private String role;
    	
    	@Column(name = "age")
    	private Integer age;
    	
    	@Column(name = "name")
    	private String name;
    
    	public Long getId() {
    		return id;
    	}
    
    	public void setId(Long id) {
    		this.id = id;
    	}
    
    	public String getCreateTime() {
    		return createTime;
    	}
    
    	public void setCreateTime(String createTime) {
    		this.createTime = createTime;
    	}
    
    	public String getLastLoginTime() {
    		return lastLoginTime;
    	}
    
    	public void setLastLoginTime(String lastLoginTime) {
    		this.lastLoginTime = lastLoginTime;
    	}
    
    	public String getLoginName() {
    		return loginName;
    	}
    
    	public void setLoginName(String loginName) {
    		this.loginName = loginName;
    	}
    
    	public String getPassword() {
    		return password;
    	}
    
    	public void setPassword(String password) {
    		this.password = password;
    	}
    
    	public String getRealName() {
    		return realName;
    	}
    
    	public void setRealName(String realName) {
    		this.realName = realName;
    	}
    
    	public String getRole() {
    		return role;
    	}
    
    	public void setRole(String role) {
    		this.role = role;
    	}
    
    	public Integer getAge() {
    		return age;
    	}
    
    	public void setAge(Integer age) {
    		this.age = age;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    	
    	
    
    }

2、Dao层(dao)

package com.zzg.springdata.dao;
    
    import org.springframework.data.jpa.repository.JpaRepository;
    
    import com.zzg.springdata.model.User;
    
    public interface UserDao extends JpaRepository<User, Long> {
    
    }

3、service层(service)

package com.zzg.springdata.service;
    
    
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import org.springframework.transaction.annotation.Transactional;
    
    import com.zzg.springdata.dao.UserDao;
    import com.zzg.springdata.model.User;
    
    @Service
    @Transactional
    public class UserService {
    	@Autowired
        private UserDao userDao;
        
        public String add(User user){
            userDao.save(user);
            return "添加成功！";
        }
        
        public String addUser(){
            User user = new User();
            user.setAge(18);       
            user.setCreateTime("2017-03-07 00:53:12");
            user.setLastLoginTime("2017-03-07 00:54:12");
            user.setLoginName("zzg");
            user.setName("小周");
            user.setPassword("123456");
            user.setRealName("周*刚");
            user.setRole("一级管理员");
            userDao.save(user);
            return "添加成功！";
        }
        
        public User getOneUser(Long id){
            return userDao.findOne(id);
        }
    }

4、controller层(controller)

package com.zzg.springdata.controller;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.MediaType;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import com.zzg.springdata.model.User;
    import com.zzg.springdata.service.UserService;
    
    @Controller    
    public class UserController {
    	 	@Autowired
    	    private UserService userService;
    	    
    	    @RequestMapping(value = "/saveUser",
    	            method = RequestMethod.GET
    	           )
    	    @ResponseBody
    	    public String saveUser(HttpServletRequest  request){
    	    	User user =new User();
    	    	
    	    	user.setAge(Integer.parseInt(request.getParameter("age")));
    	    	user.setCreateTime(request.getParameter("createTime"));
    	    	user.setLastLoginTime(request.getParameter("lastLoginTime"));
    	    	user.setName(request.getParameter("name"));
    	    	user.setPassword(request.getParameter("password"));
    	    	user.setRealName(request.getParameter("realName"));
    	    	user.setRole(request.getParameter("role"));
    	    	user.setLoginName(request.getParameter("loginName"));
    	    	System.out.println(user.getCreateTime()+"//"+user.getLastLoginTime());
    	        return userService.add(user);
    	    }
    	    
    	    @RequestMapping(value = "/addUser",
    	            method = RequestMethod.GET
    	           )
    	    @ResponseBody
    	    public String add(){
    	        return userService.addUser();
    	    }
    	    
    	    @RequestMapping(value = "/user",
    	            method = RequestMethod.GET
    	           )
    	    @ResponseBody
    	    public User add(Long id){
    	        return userService.getOneUser(id);
    	    }
    }

数据请求结果展示：

1、新增用户数据：/saveUser

![Center 1][]

![Center 2][]

2、添加用户数据：/add

![Center 3][]

3、查询特点用户信息:/user

![Center 4][]

[Center]: https://img-blog.csdn.net/20170307021904136?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20170307022710866?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 2]: https://img-blog.csdn.net/20170307022733454?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 3]: https://img-blog.csdn.net/20170307022853806?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 4]: https://img-blog.csdn.net/20170307022936908?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center