Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
来源:互联网 发布:matlab 三维数组作图 编辑:程序博客网 时间:2024/06/08 10:25
Gson 是 Google 提供的用来在 Java 对象和 JSON 数据之间进行映射的 Java 类库。可以将一个 JSON 字符串转成一个 Java 对象,或者反过来。
jar和源码下载地址: http://code.google.com/p/google-gson/downloads/list
实体类:
</pre><div class="dp-highlighter bg_java" sizcache="28" sizset="55"><div class="bar" sizcache="28" sizset="55"><div class="tools" sizcache="28" sizset="55"><strong>[java]</strong> <a target=_blank title="view plain" class="ViewSource" href="http://blog.csdn.net/lk_blog/article/details/7685169#">view plain</a><a target=_blank title="copy" class="CopyToClipboard" href="http://blog.csdn.net/lk_blog/article/details/7685169#">copy</a><a target=_blank title="print" class="PrintSource" href="http://blog.csdn.net/lk_blog/article/details/7685169#">print</a><a target=_blank title="?" class="About" href="http://blog.csdn.net/lk_blog/article/details/7685169#">?</a></div></div><ol class="dp-j"><li class="alt"><span class="keyword">public</span> <span class="keyword">class</span> Student { </li><li> <span class="keyword">private</span> <span class="keyword">int</span> id; </li><li class="alt"> <span class="keyword">private</span> String name; </li><li> <span class="keyword">private</span> Date birthDay; </li><li class="alt"> </li><li> <span class="keyword">public</span> <span class="keyword">int</span> getId() { </li><li class="alt"> <span class="keyword">return</span> id; </li><li> } </li><li class="alt"> </li><li> <span class="keyword">public</span> <span class="keyword">void</span> setId(<span class="keyword">int</span> id) { </li><li class="alt"> <span class="keyword">this</span>.id = id; </li><li> } </li><li class="alt"> </li><li> <span class="keyword">public</span> String getName() { </li><li class="alt"> <span class="keyword">return</span> name; </li><li> } </li><li class="alt"> </li><li> <span class="keyword">public</span> <span class="keyword">void</span> setName(String name) { </li><li class="alt"> <span class="keyword">this</span>.name = name; </li><li> } </li><li class="alt"> </li><li> <span class="keyword">public</span> Date getBirthDay() { </li><li class="alt"> <span class="keyword">return</span> birthDay; </li><li> } </li><li class="alt"> </li><li> <span class="keyword">public</span> <span class="keyword">void</span> setBirthDay(Date birthDay) { </li><li class="alt"> <span class="keyword">this</span>.birthDay = birthDay; </li><li> } </li><li class="alt"> </li><li> <span class="annotation">@Override</span> </li><li class="alt"> <span class="keyword">public</span> String toString() { </li><li> <span class="keyword">return</span> <span class="string">"Student [birthDay="</span> + birthDay + <span class="string">", id="</span> + id + <span class="string">", name="</span> </li><li class="alt"> + name + <span class="string">"]"</span>; </li><li> } </li><li class="alt"> </li><li>} </li></ol></div><pre class="java" style="DISPLAY: none" name="code">public class Student {private int id;private String name;private Date birthDay;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Date getBirthDay() {return birthDay;}public void setBirthDay(Date birthDay) {this.birthDay = birthDay;}@Overridepublic String toString() {return "Student [birthDay=" + birthDay + ", id=" + id + ", name="+ name + "]";}}
测试类:
- import java.util.ArrayList;
- import java.util.Date;
- import java.util.List;
- import com.google.gson.Gson;
- import com.google.gson.reflect.TypeToken;
- public class GsonTest1 {
- public static void main(String[] args) {
- Gson gson = new Gson();
- Student student1 = new Student();
- student1.setId(1);
- student1.setName("李坤");
- student1.setBirthDay(new Date());
- // //////////////////////////////////////////////////////////
- System.out.println("----------简单对象之间的转化-------------");
- // 简单的bean转为json
- String s1 = gson.toJson(student1);
- System.out.println("简单Bean转化为Json===" + s1);
- // json转为简单Bean
- Student student = gson.fromJson(s1, Student.class);
- System.out.println("Json转为简单Bean===" + student);
- // 结果:
- // 简单Bean转化为Json==={"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:27:52 AM"}
- // Json转为简单Bean===Student [birthDay=Fri Jun 22 08:27:52 CST 2012, id=1,
- // name=李坤]
- // //////////////////////////////////////////////////////////
- Student student2 = new Student();
- student2.setId(2);
- student2.setName("曹贵生");
- student2.setBirthDay(new Date());
- Student student3 = new Student();
- student3.setId(3);
- student3.setName("柳波");
- student3.setBirthDay(new Date());
- List<Student> list = new ArrayList<Student>();
- list.add(student1);
- list.add(student2);
- list.add(student3);
- System.out.println("----------带泛型的List之间的转化-------------");
- // 带泛型的list转化为json
- String s2 = gson.toJson(list);
- System.out.println("带泛型的list转化为json==" + s2);
- // json转为带泛型的list
- List<Student> retList = gson.fromJson(s2,
- new TypeToken<List<Student>>() {
- }.getType());
- for (Student stu : retList) {
- System.out.println(stu);
- }
- // 结果:
- // 带泛型的list转化为json==[{"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":2,"name":"曹贵生","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":3,"name":"柳波","birthDay":"Jun 22, 2012 8:28:52 AM"}]
- // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=1, name=李坤]
- // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=2, name=曹贵生]
- // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=3, name=柳波]
- }
- }
import java.util.ArrayList;import java.util.Date;import java.util.List;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;public class GsonTest1 {public static void main(String[] args) {Gson gson = new Gson();Student student1 = new Student();student1.setId(1);student1.setName("李坤");student1.setBirthDay(new Date());// //////////////////////////////////////////////////////////System.out.println("----------简单对象之间的转化-------------");// 简单的bean转为jsonString s1 = gson.toJson(student1);System.out.println("简单Bean转化为Json===" + s1);// json转为简单BeanStudent student = gson.fromJson(s1, Student.class);System.out.println("Json转为简单Bean===" + student);// 结果:// 简单Bean转化为Json==={"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:27:52 AM"}// Json转为简单Bean===Student [birthDay=Fri Jun 22 08:27:52 CST 2012, id=1,// name=李坤]// //////////////////////////////////////////////////////////Student student2 = new Student();student2.setId(2);student2.setName("曹贵生");student2.setBirthDay(new Date());Student student3 = new Student();student3.setId(3);student3.setName("柳波");student3.setBirthDay(new Date());List<Student> list = new ArrayList<Student>();list.add(student1);list.add(student2);list.add(student3);System.out.println("----------带泛型的List之间的转化-------------");// 带泛型的list转化为jsonString s2 = gson.toJson(list);System.out.println("带泛型的list转化为json==" + s2);// json转为带泛型的listList<Student> retList = gson.fromJson(s2,new TypeToken<List<Student>>() {}.getType());for (Student stu : retList) {System.out.println(stu);}// 结果:// 带泛型的list转化为json==[{"id":1,"name":"李坤","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":2,"name":"曹贵生","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":3,"name":"柳波","birthDay":"Jun 22, 2012 8:28:52 AM"}]// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=1, name=李坤]// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=2, name=曹贵生]// Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=3, name=柳波]}}
执行结果:
- ----------简单对象之间的转化-------------
- 简单Bean转化为Json==={"id":1,"name":"李坤","birthDay":"Jun 22, 2012 9:10:31 PM"}
- Json转为简单Bean===Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=1, name=李坤]
- ----------带泛型的List之间的转化-------------
- 带泛型的list转化为json==[{"id":1,"name":"李坤","birthDay":"Jun 22, 2012 9:10:31 PM"},{"id":2,"name":"曹贵生","birthDay":"Jun 22, 2012 9:10:31 PM"},{"id":3,"name":"柳波","birthDay":"Jun 22, 2012 9:10:31 PM"}]
- Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=1, name=李坤]
- Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=2, name=曹贵生]
- Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=3, name=柳波]
----------简单对象之间的转化-------------简单Bean转化为Json==={"id":1,"name":"李坤","birthDay":"Jun 22, 2012 9:10:31 PM"}Json转为简单Bean===Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=1, name=李坤]----------带泛型的List之间的转化-------------带泛型的list转化为json==[{"id":1,"name":"李坤","birthDay":"Jun 22, 2012 9:10:31 PM"},{"id":2,"name":"曹贵生","birthDay":"Jun 22, 2012 9:10:31 PM"},{"id":3,"name":"柳波","birthDay":"Jun 22, 2012 9:10:31 PM"}]Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=1, name=李坤]Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=2, name=曹贵生]Student [birthDay=Fri Jun 22 21:10:31 CST 2012, id=3, name=柳波]
Json转换利器Gson之实例一-简单对象转化和带泛型的List转化 (http://blog.csdn.net/lk_blog/article/details/7685169)
Json转换利器Gson之实例二-Gson注解和GsonBuilder (http://blog.csdn.net/lk_blog/article/details/7685190)
Json转换利器Gson之实例三-Map处理(上) (http://blog.csdn.net/lk_blog/article/details/7685210)
Json转换利器Gson之实例四-Map处理(下) (http://blog.csdn.net/lk_blog/article/details/7685224)
Json转换利器Gson之实例五-实际开发中的特殊需求处理 (http://blog.csdn.net/lk_blog/article/details/7685237)
Json转换利器Gson之实例六-注册TypeAdapter及处理Enum类型 (http://blog.csdn.net/lk_blog/article/details/7685347)
实例代码下载: http://download.csdn.net/detail/lk_blog/4387822
本文转载自http://blog.csdn.net/lk_blog/article/details/7685169
0 0
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Objective-C:copy的用法解释
- 如何在导航栏的两侧加多个Button
- cocos2d-x笔记(1)
- 排序算法(一)——简单选择排序
- iOS动画 UIView动画
- Json转换利器Gson之实例一-简单对象转化和带泛型的List转化
- Spring AOP代理模式
- 希尔排序-插入排序算法
- Java Thread join() 的用法
- 无限轮播图
- JQuery,JS获取正确scrollTop
- 两个栈实现队列 两个队列实现栈
- UIGestureRecognizer手势识别器
- 数据卫士DG