java后台解析json字符串

忘是亡心i 2022-05-18 21:15 234阅读 0赞

来源：[https://blog.csdn.net/biaozhun90/article/details/55101911][https_blog.csdn.net_biaozhun90_article_details_55101911]

1.以下maven依赖需要一起加载

<dependency>  
<groupId>net.sf.json-lib</groupId>  
<artifactId>json-lib</artifactId>  
<version>2.4</version>  
<classifier>jdk15</classifier>  
</dependency>  
<dependency>  
<groupId>commons-lang</groupId>  
<artifactId>commons-lang</artifactId>  
<version>2.6</version>  
</dependency>  
<dependency>  
<groupId>commons-httpclient</groupId>  
<artifactId>commons-httpclient</artifactId>  
<version>3.1</version>  
</dependency>  
<dependency>  
<groupId>commons-beanutils</groupId>  
<artifactId>commons-beanutils</artifactId>  
<version>1.8.3</version>  
</dependency>  
<dependency>  
<groupId>commons-collections</groupId>  
<artifactId>commons-collections</artifactId>  
<version>3.2</version>  
</dependency>  
<dependency>  
<groupId>commons-logging</groupId>  
<artifactId>commons-logging</artifactId>  
<version>1.1.1</version>  
</dependency>  
<dependency>  
<groupId>net.sf.ezmorph</groupId>  
<artifactId>ezmorph</artifactId>  
<version>1.0.6</version>  
</dependency>  
<dependency>  
<groupId>net.sf.json-lib</groupId>  
<artifactId>json-lib-ext-spring</artifactId>  
<version>1.0.2</version>  
</dependency>  
2 解析json字符串

package com.jusfoun.util;  
  
import java.util.Iterator;  
  
import org.junit.Test;  
  
import net.sf.json.JSONArray;  
import net.sf.json.JSONObject;  
  
public class Dtest \{  
  
@Test  
public void ddtest()\{  
String jsonStr = "\{\\"id\\":\\"3\\",\\"name\\":\\"bob\\",\\"pass\\":\\"123\\"\}";  
JSONObject jsonObj = JSONObject.fromObject(jsonStr);  
System.out.println(jsonObj.get("name"));  
String arrStr = "\[\{\\"id\\":\\"3\\",\\"name\\":\\"bob\\",\\"pass\\":\\"123\\"\},\{\\"id\\":\\"4\\",\\"name\\":\\"lancy\\",\\"pass\\":\\"134\\"\}\]";  
JSONArray jsonArr = JSONArray.fromObject(arrStr);  
System.out.println(jsonArr.getJSONObject(1).get("name"));  
Iterator<Object> it = jsonArr.iterator();  
while(it.hasNext())\{  
JSONObject obj = (JSONObject)it.next();  
System.out.println("name:"+obj.get("name")+" pass:"+obj.get("pass"));  
\}  
\}  
\}

[https_blog.csdn.net_biaozhun90_article_details_55101911]: https://blog.csdn.net/biaozhun90/article/details/55101911