json

package com.syp.json.test.jacson; import java.util.ArrayList; import java.util.List; import org.codehaus.jackson.map.ObjectMapper; import com.syp.json.bean.Student; import com.syp.json.bean.StudentList; public class TestJacson { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String str="{\"student\":[{\"name\":\"leilei\",\"age\":23},{\"name\":\"leilei02\",\"age\":23}]}"; Student stu = null; List<Student> list = null; List<Student> tmplist = new ArrayList<Student>(); try { ObjectMapper objectMapper=new ObjectMapper(); StudentList studentList=objectMapper.readValue(str, StudentList.class); list=studentList.getStudent(); for(Student s:list){ System.out.println(s.getName()); if(s.getName().equals("leilei")) { s.setName("hanmeimei"); } else { s.setName("hanmeimei01"); } tmplist.add(s); } //studentList.getStudent().removeAll(tmplist); String orderJson = objectMapper.writeValueAsString(studentList); System.out.println(orderJson); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }