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分享请教java里的gson解析问题
[
{"Id":1,"Name":"Alin","Grade":[{"Chinese":A,"Math":"A","English":"D"}]}
{"Id":2,"Name":"BoB","Grade":[{"Chinese":B,"Math":"C","English":"A"}]}
{"Id":3,"Name":"Cindy","Grade":[{"Chinese":C,"Math":"A","English":"B"}]}
]
想解析得到如下结果，望各位大侠们指点，最好能有代码！谢谢大家了！
Name=Alin, Chinese=A
Name=BoB, Chinese=B
Name=Cindy, Chinese=C
{"Id":1,"Name":"Alin","Grade":[{"Chinese":A,"Math":"A","English":"D"}]}
{"Id":2,"Name":"BoB","Grade":[{"Chinese":B,"Math":"C","English":"A"}]}
{"Id":3,"Name":"Cindy","Grade":[{"Chinese":C,"Math":"A","English":"B"}]}
]
想解析得到如下结果，望各位大侠们指点，最好能有代码！谢谢大家了！
Name=Alin, Chinese=A
Name=BoB, Chinese=B
Name=Cindy, Chinese=C
...全文
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ekekyn 2014-01-15
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+1
掌握了方法，很容易写出代码
长腮的北极熊 2014-01-15
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++
张自强 2014-01-14
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如果就楼主的那个json 解析的话很多种方法都可以的，看下json.org的官网org.json ,json-lib等等很多工具，下载一个试试就好了。
Lavener 2014-01-14
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首先定义两个Javebean,如下：
Grade.java
package com.armslee.json.test.model;
import java.io.Serializable;
public class Grade implements Serializable{
/**
*
*/
private static final long serialVersionUID = -2118483800595534815L;
private String chinese;
private String math;
private String english;
public String getChinese() {
return chinese;
}
public void setChinese(String chinese) {
this.chinese = chinese;
}
public String getMath() {
return math;
}
public void setMath(String math) {
this.math = math;
}
public String getEnglish() {
return english;
}
public void setEnglish(String english) {
this.english = english;
}
@Override
public String toString() {
return "Chinese:"+this.chinese;
}
}
package com.armslee.json.test.model;
import java.io.Serializable;
public class Person implements Serializable {
/**
*
*/
private static final long serialVersionUID = 3254237100070656010L;
private String id;
private String name;
private Grade grade;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Grade getGrade() {
return grade;
}
public void setGrade(Grade grade) {
this.grade = grade;
}
@Override
public String toString() {
// TODO Auto-generated method stub
return "Name:"+this.name+" "+this.grade.toString();
}
}
package com.armslee.json.test.cases;
import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSONArray;
import com.armslee.json.test.model.Grade;
import com.armslee.json.test.model.Person;
public class Test {
public static void main(String[] args) {
Person p = new Person();
p.setId("1");
p.setName("Lavender");
Grade g = new Grade();
g.setChinese("A");
g.setMath("A");
g.setEnglish("A");
p.setGrade(g);
List<Person> lp = new ArrayList<Person>();
lp.add(p);
lp.add(p);
lp.add(p);
String info = JSONArray.fromObject(lp).toString();
JSONArray ja = JSONArray.fromObject(info);
@SuppressWarnings({ "unchecked", "deprecation" })
List<Person> newL = JSONArray.toList(ja, Person.class);
for (Person person : newL) {
System.out.println(person.toString());
}
}
}
Name:Lavender Chinese:A
Name:Lavender Chinese:A
Name:Lavender Chinese:A
oh_Maxy 2014-01-14
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gson是指谷歌的json处理工具么?
一般要先定义好一个类，然后使用第三方工具操作，比较方便。
目前恰好使用的是Google的，这边有个样例，可以参考下：
public class GoogleJsonTest {
public static void main(String[] args) {
Gson gson = new Gson();
Object myValue = new MyValue("9527", 999.99);
// 对象转为json // String jsonStr = convertObjectToString(myValue);
String jsonStr = gson.toJson(myValue);
System.out.println(jsonStr + myValue.getClass());
// json字符串转为对象
MyValue myValue2 = gson.fromJson(jsonStr, MyValue.class);// 这个应该是你想要的操作吧
System.out.println(myValue2);
System.out.println(myValue == myValue2);
List<Object> myValueList = new ArrayList<Object>();
myValueList.add(myValue);
myValueList.add("111");
myValueList.add(myValue2);
String jsonStrValues = gson.toJson(myValueList);
System.out.println("jsonStrValues===" + jsonStrValues);
List<Object> myValueList2 = gson.fromJson(jsonStrValues, List.class);// 有告警
for (Object obj : myValueList2) {
System.out.println("obj is===" + obj+":"+obj.getClass());
}
}
}
// 这个是我自定义的一个简单的类，LZ需要自己定义一个类，有Name和Chinese属性
class MyValue {
private String id;
private double price;
private Detail detail;
public MyValue(String id, double price) {
this.id = id;
this.price = price;
this.detail = new Detail("我的ID是:" + id + "。很高兴认识大家！");
}
@Override
public String toString() {
return "id:" + id + ";price:" + price + ";宣言：" + detail.getMyWords();
}
private class Detail {
private String myWords;
public Detail(String myWords) {
this.myWords = myWords;
}
public String getMyWords() {
return myWords;
}
}
}