阿里的fastJSON的用法

package org.fastjson;

public class User {
private int id;

private String userName;

public User() {
}

public User(int id, String userName) {
this.id = id;
this.userName = userName;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getUserName() {
return userName;
}

public void setUserName(String userName) {
this.userName = userName;
}

@Override
public String toString() {
return "User [id=" + id + ", userName=" + userName + "]";
}

}

package org.fastjson;

public class Teacher {

private int id;

private String classNo;

private String courseNo;

public Teacher() {
super();
}

public Teacher(int id, String classNo, String courseNo) {
this.id = id;
this.classNo = classNo;
this.courseNo = courseNo;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getClassNo() {
return classNo;
}

public void setClassNo(String classNo) {
this.classNo = classNo;
}

public String getCourseNo() {
return courseNo;
}

public void setCourseNo(String courseNo) {
this.courseNo = courseNo;
}

@Override
public String toString() {
return "Teacher [id=" + id + ", classNo=" + classNo + ", courseNo=" + courseNo + "]";
}

}

package org.fastjson;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;

public class FastjsonClass {

public static void main(String[] args) {

System.out.println(mapToJson());

}

public void parseJson(String jsonStr){
User user = new User(11,"京津冀");
Teacher teacher = new Teacher(1,"A1000","CC2000");
Teacher teacher1 = new Teacher(2,"A1001","CC2001");

List<Teacher> teacherList = new ArrayList<Teacher>();
teacherList.add(teacher);
teacherList.add(teacher1);
Temp temp = new Temp(user,teacherList);

String tempJson = JSON.toJSONString(temp);
System.out.println(tempJson);
JSONObject jsonObj = JSON.parseObject(tempJson);
JSONArray result = jsonObj.getJSONArray("teacherList");
List<Teacher> th = JSON.parseArray(result.toJSONString(),Teacher.class);
System.out.println(th.toString());

JSONObject userObj = jsonObj.getJSONObject("user");

User user1 = JSON.parseObject(userObj.toJSONString(), new TypeReference<User>() {});

User user2 = JSON.parseObject(userObj.toJSONString(), User.class);
System.out.println(user.toString());

try {
DButils.getConnection();
// System.out.println(getCount("SELECT count(table_name) FROM information_schema.TABLES WHERE table_name='book' "));

DButils.insertEntity(User.class, user2);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

public static String mapToJson(){

Map<String, Object> map = new HashMap<String, Object>();
User user = new User(11,"京津冀");
map.put("user", user);

Teacher teacher = new Teacher(1,"A1000","CC2000");
Teacher teacher1 = new Teacher(2,"A1001","CC2001");
List<Teacher> teacherList = new ArrayList<Teacher>();
teacherList.add(teacher);
teacherList.add(teacher1);
map.put("teacherList", teacherList);
return JSON.toJSONString(map);
}

}