字符串转Java对象对象为空什么原因,转json对象都正常!

[salut]

--DBConnect.java

package com.cmcc.testUtil;

public class DBConnect {
	private String driv;
	private String url;
	private String name;
	private String psw;

	public DBConnect(String d,String u,String n,String p){
		driv = d;
		url = u;
		name = n;
		psw = p;
	}

	public String getDriv() {
		return driv;
	}

	public void setDriv(String driv) {
		this.driv = driv;
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPsw() {
		return psw;
	}

	public void setPsw(String psw) {
		this.psw = psw;
	}

	@Override
	public String toString() {
		return "DBConnect{" +
				"driv='" + driv + '\'' +
				", url='" + url + '\'' +
				", name='" + name + '\'' +
				", psw='" + psw + '\'' +
				'}';
	}
}

--------------GetDBConn.java

package com.cmcc.testUtil;

import com.alibaba.fastjson.JSONObject;
import com.cmcc.common.constant.Constants;
import com.cmcc.common.utils.DESUtil;

public class GetDBConn {
	public static void getDBConn() {
		String drive = "oracle.jdbc.driver.OracleDriver";
		String url = "jdbc:oracle:thin:@localhost:1521:XE";
		String username = "mms";
		String password = "mms";

		DBConnect conn = new DBConnect(drive,url,username,password);

		//展示打印字段
		String json = JSONObject.toJSONString(conn);
		System.out.println("对象转json串:[" + json + "]");

		//对字符串加密
		String mi = DESUtil.jiami(json, Constants.DB_CONN_KEY);
		System.out.println("加密:[" + mi + "]");

		//对字符串解密
		String ming = DESUtil.jiemi(mi, Constants.DB_CONN_KEY);
		System.out.println("解密:[" + ming + "]");

		//解密字符串转对象


		//解密串转json对象
		JSONObject jobj = JSONObject.parseObject(ming);
		System.out.println("转json对象:[drive=" + jobj.getString("driv") + ",url="+jobj.getString("url")+",username="+jobj.getString("name")+",password="+jobj.getString("psw")+"]");

		DBConnect db = JSONObject.toJavaObject(jobj, DBConnect.class);
		System.out.println("转对象:["+db.toString()+"]");
	}

	public static void main(String[] args) {
		getDBConn();
	}
}

------------结果:
对象转json串:[{"driv":"oracle.jdbc.driver.OracleDriver","name":"mms","psw":"mms","url":"jdbc:oracle:thin:@localhost:1521:XE"}]
加密:[Zmecydh8aDAoINl0emY0c3TuKnGtJpMhMCPrJl7r3yxEcIinJlPxn9i+8B78RI2kRmkJWl8U/rW29xXXg/uiK67YXRrYAI9EIO4LcIVlbuLa/bluouw3IZwj8zV2uQGO5ztEmq62/JPV2SEdcE4UCg==]
解密:[{"driv":"oracle.jdbc.driver.OracleDriver","name":"mms","psw":"mms","url":"jdbc:oracle:thin:@localhost:1521:XE"}]
转json对象:[drive=oracle.jdbc.driver.OracleDriver,url=jdbc:oracle:thin:@localhost:1521:XE,username=mms,password=mms]
转对象:[DBConnect{driv='null', url='null', name='null', psw='null'}]

[nayi_224]

直接用你的代码会报错，改完后也没有会出现null的地方

package yyst.myTest.test.lt20;

import com.alibaba.fastjson.JSONObject;

public class Test01 {
	
	public static void main(String[] args) {
		GetDBConn.getDBConn();
	}
	
}

class DBConnect {
    private String driv;
    private String url;
    private String name;
    private String psw;
 
    public DBConnect() {
		// TODO Auto-generated constructor stub
	}
    
    public DBConnect(String d,String u,String n,String p){
        driv = d;
        url = u;
        name = n;
        psw = p;
    }
 
    public String getDriv() {
        return driv;
    }
 
    public void setDriv(String driv) {
        this.driv = driv;
    }
 
    public String getUrl() {
        return url;
    }
 
    public void setUrl(String url) {
        this.url = url;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public String getPsw() {
        return psw;
    }
 
    public void setPsw(String psw) {
        this.psw = psw;
    }
 
    @Override
    public String toString() {
        return "DBConnect{" +
                "driv='" + driv + '\'' +
                ", url='" + url + '\'' +
                ", name='" + name + '\'' +
                ", psw='" + psw + '\'' +
                '}';
    }
}

class GetDBConn {
    public static void getDBConn() {
        String drive = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@localhost:1521:XE";
        String username = "mms";
        String password = "mms";
 
        DBConnect conn = new DBConnect(drive,url,username,password);
 
        //展示打印字段
        String json = JSONObject.toJSONString(conn);
        System.out.println("对象转json串:[" + json + "]");
 
        //对字符串加密
        String mi = "mi";
        System.out.println("加密:[" + mi + "]");
 
        //对字符串解密
        String ming = "ming";
        System.out.println("解密:[" + ming + "]");
 
        //解密字符串转对象
 
 
        //解密串转json对象
        JSONObject jobj = JSONObject.parseObject(json);
        System.out.println("转json对象:[drive=" + jobj.getString("driv") + ",url="+jobj.getString("url")+",username="+jobj.getString("name")+",password="+jobj.getString("psw")+"]");
 
        DBConnect db = JSONObject.toJavaObject(jobj, DBConnect.class);
        System.out.println("转对象:["+db.toString()+"]");
    }

//    public static void main(String[] args) {
//        getDBConn();
//    }
}

[qqvb]

你转json对像之后为什么引号不见了?

[qqvb]

为什么转json后没有引号了?这样就是json格式了,为什么解密后还要转为json?为什么不直接JSONObjecdt.parse()?