springMVC 中文乱码问题检查

柔光的暖阳◎ 2022-06-13 05:47 232阅读 0赞

1. 检查tomcat 配置， 查看编码设置，见粗体

找到 server.xml 中的一下代码，查看一下粗体的设置

2. 查看字符集过滤器

基于web.xml 的配置

## <filter>       <filter-name>encodingFilter</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>encodingFilter</filter-name>     <url-pattern>/\*</url-pattern>   </filter-mapping>       基于javaconfig 配置  @Override protected Filter\[\] getServletFilters() \{ CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter(); characterEncodingFilter.setEncoding("UTF-8"); characterEncodingFilter.setForceEncoding(true); return new Filter\[\]\{characterEncodingFilter\}; \}  encoding 设置request编码，  forceEncoding 设置request和response 编码一致          3. 查看springMVC 的消息转换器配置  基于配置文件的  <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">       <constructor-arg value="UTF-8" index="0"/>       <property name="supportedMediaTypes">           <list>               <value>text/plain;charset=UTF-8</value>           </list>       </property>   </bean>          <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>   <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">       <property name="messageConverters">           <list>               <ref bean="stringHttpMessageConverter"/>               <ref bean="jackson2HttpMessageConverter"/>           </list>       </property>   </bean>         <mvc:annotation-driven />          配置文件第二种方式       <mvc:annotation-driven>       <mvc:message-converters>           <ref bean="stringHttpMessageConverter"/>           <ref bean="jackson2HttpMessageConverter"/>       </mvc:message-converters>   </mvc:annotation-driven>          基于javaconfig          @Override       protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) \{           converters.add(stringHttpMessageConverter());           converters.add(mappingJackson2HttpMessageConverter());           super.configureMessageConverters(converters);       \}             @Bean(name = "stringHttpMessageConverter")       public StringHttpMessageConverter stringHttpMessageConverter() \{           StringHttpMessageConverter converter = new StringHttpMessageConverter();           converter.setSupportedMediaTypes(Arrays.asList(new MediaType("text", "plain", Charset.forName("UTF-8"))));           return converter;       \}             @Bean(name = "mappingJackson2HttpMessageConverter")       public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() \{           MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();           messageConverter.setSupportedMediaTypes(Arrays.asList(MediaType.APPLICATION\_JSON\_UTF8));           return messageConverter;       \}  4. 检查 java 文件编码， java文件编码影响  系统变量file.encoding影响到   a. Charset.defaultCharset() Java环境中最关键的编码设置   b. URLEncoder.encode(String) Web环境中最常遇到的编码使用   c. com.sun.org.apache.xml.internal.serializer.Encoding 影响对无编码设置的xml文件的读取   d. javax.print.DocFlavor 影响打印的编码   5. gradle build  打包时出现编码的不可映射字符的问题  build.gradle 添加如下代码, 见粗体  repositories \{       mavenCentral()   \}   \[compileJava, compileTestJava\]\*.options\*.encoding = 'UTF-8'   dependencies \{       compile("org.springframework:spring-context:4.3.6.RELEASE")     \} ##