转：java后台解析json字符串

左手的ㄟ右手 2022-05-10 05:38 371阅读 0赞

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"));
    		}
    	}
    }

验证结果：

![70][]

[70]: /images/20220510/4a49c7bcc3f242d191f5f64c8b85dec0.png