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/**
*
* 转载请标明出处：http://blog.csdn.net/u013598111/article/details/51277085
* @author：【JunTao_sun】
*
*
*/
package com.example.gson;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonWriter;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.util.JsonReader;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
private TextView text;
private Gson gson;
private String TAG;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = (TextView) findViewById(R.id.text);
gson = new Gson();
Button btn = (Button) findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
jsonRed();
new Thread(new Runnable() {
@Override
public void run() {
try {
getDatas();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}).start();
}
});
}
private void getDatas() throws IOException {
URL url = new URL("http://192.168.0.102:8080/myweb/json");
final HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
conn.setDoInput(true);
conn.setDoInput(true);
conn.connect();
InputStream ins = null;
if (conn.getResponseCode() == 200) {
ins = conn.getInputStream();
}
if (ins != null) {
final String result = parseInputStream(ins, conn);
// 第一种 解析jsons.jsp格式的 下面会贴服务器 jsp代码
// final Vegetable v= gson.fromJson(result, Vegetable.class);
// 第二种 解析jsons2.jsp格式的
List<Menu> list = new ArrayList<Menu>();
final List<Menu> menu = gson.fromJson(result,
new TypeToken<List<Menu>>() {
}.getType());
runOnUiThread(new Runnable() {
@Override
public void run() {
Log.e("jt", "" + result);
<span style="white-space:pre"> </span>// 第一种 测试text.setText( v.getResult().getData().get(0).getImtro());
<span style="white-space:pre"> </span>// 第二种测试text.setText( menu.get(0).getImtro());
}
});
}
}
/**
*
* 解析获取网络的输入流
*
**/
private String parseInputStream(InputStream ins, HttpURLConnection conn)
throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
int len = 0;
byte[] buffs = new byte[1024];
while ((len = ins.read(buffs)) != -1) {
out.write(buffs, 0, len);
}
String srt = new String(out.toByteArray());
out.close();
ins.close();
conn.disconnect();
return srt;
}
public void jsonRed() {
StringBuilder str = new StringBuilder();
Map<String, String> map = new HashMap<String, String>();
map.put("adress", "广东");
map.put("name", "橘子");
map.put("age", "18");
map.put("like", "bread");
//构建一个json对象
String mapj = gson.toJson(map);
str.append(mapj);
text.setText(str);
str.append("\n");
List<String> list = new ArrayList<String>();
list.add("蛋糕");
list.add("水果");
list.add("面包");
//构建一个数组对象
String listj = gson.toJson(list);
str.append(listj);
text.setText(str);
str.append("\n");
//JsonReader的使用
//解析单个对象
StringReader sw = new StringReader(mapj);
JsonReader reader = new JsonReader(sw);
try {
reader.beginObject();
while (reader.hasNext()) {
String key = reader.nextName();
if ("adress".equals(key)) {
System.out.println(reader.nextString());
}
if ("name".equals(key)) {
System.out.println(reader.nextString());
}
if ("age".equals(key)) {
System.out.println(reader.nextString());
}
if ("like".equals(key)) {
System.out.println(reader.nextString());
}
}
reader.endObject();
// 解析数组对象
Map<String, String> map2 = new HashMap<String, String>();
map2.put("adress", "福建");
map2.put("name", "苹果");
map2.put("age", "20");
map2.put("like", "cake");
Map<String, String> map3 = new HashMap<String, String>();
map3.put("adress", "背景");
map3.put("name", "香蕉");
map3.put("age", "19");
map3.put("like", "LOL");
List<Map> arrObject = new ArrayList<Map>();
arrObject.add(map2);
arrObject.add(map3);
//把json格式字符串 写入文件
File file=writerJsonToFile(arrObject);
//读取文件里的json数据
readJsonFromFile(file);
String arrO = gson.toJson(arrObject);
str.append(arrO);
text.setText(str);
str.append("\n");
JsonReader reader1 = new JsonReader(new StringReader(arrO));
reader1.beginArray();
while (reader1.hasNext()) {
reader1.beginObject();
while (reader1.hasNext()) {
String key = reader1.nextName();
if ("adress".equals(key)) {
System.out.println(reader1.nextString());
}
if ("name".equals(key)) {
System.out.println(reader1.nextString());
}
if ("age".equals(key)) {
System.out.println(reader1.nextString());
}
if ("like".equals(key)) {
System.out.println(reader1.nextString());
}
}
reader1.endObject();
}
reader1.endArray();
// 第三种 解析对象包含对象
String json3 = "{ \"name\":\"juntao\",\"age\":25,\"address\":{\"country\":\"中国\",\"province\":\"广东\",\"city\":\"潮州\"}}";
JsonReader reader2 = new JsonReader(new StringReader(json3));
reader2.beginObject();
while (reader2.hasNext()) {
String key = reader2.nextName();
if ("name".equals(key)) {
System.out.println(reader2.nextString());
}
if ("age".equals(key)) {
System.out.println(reader2.nextInt());
}
if ("address".equals(key)) {
reader2.beginObject();
while (reader2.hasNext()) {
String theKey =reader2.nextName();
if ("country".equals(theKey)) {
System.out.println(reader2.nextString());
}
if ("province".equals(theKey)) {
System.out.println(reader2.nextString());
}
if ("city".equals(theKey)) {
System.out.println(reader2.nextString());
}
}
reader2.endObject();
}
}
reader2.endObject();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// gson.fromJson(new InputStreamReader(new FileInputStream("")), new
// TypeToken<List<Map<String, String>>>() {}.getType());
}
private File writerJsonToFile(List<Map> mapList) {
File file = new File(getFilesDir().getAbsolutePath(),"gson");
if(!file.exists()){
try {
file.createNewFile();
Log.e(TAG, "getAbsolutePath"+file.getAbsolutePath());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
OutputStream out;
try {
out = new FileOutputStream(file);
JsonWriter writer = new JsonWriter(new OutputStreamWriter(out, "UTF-8"));//设计编码
gson.toJson(mapList, new TypeToken<List<Map<String, String>>>() {}.getType(), writer);
writer.flush();
writer.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return file;
}
private void readJsonFromFile( File file) {
InputStream input;
try {
input = new FileInputStream(file);
JsonReader reader = new JsonReader(new InputStreamReader(input));
// List<Map<String,String>> content = gson.fromJson(reader,new TypeToken<List<Map<String, String>>>() {}.getType());
List<Map<String, String>> content = gson.fromJson(new InputStreamReader(input),new TypeToken<List<Map<String, String>>>() {}.getType());
for(int i=0;i<content.size();i++){
Map<String, String> map=content.get(i);
for(Map.Entry<String, String> e:map.entrySet()){
System.out.print("key"+e.getKey()+"value"+e.getValue()+"\n");
reader.close();
}
}} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
最后是请求服务器 返回的两种 json 样式解析：
第一种 复杂的 json样式：
<span style="font-size:18px;"><%@ page language="java" contentType="text/plain; charset=UTF-8" pageEncoding="UTF-8"%>
{
"resultcode": "200",
"reason": "Success",
"result": {
"data": [{
"id": "45",
"title": "秘制红烧肉",
"tags": "家常菜;热菜;烧;煎;炖;红烧;炒锅",
"imtro": "做红烧肉的豆亲们很多，大家对红烧肉的热爱更不用我说，从名字上就能反映出来。一些高手们对红烧肉的认识更是令我佩服，单单就红烧肉的做法、菜谱都看得我是眼花缭乱，口水横流。单纯的红烧肉我平时还真没做过，再不抓紧时间做一回解解馋，不是对不起别人，而是太对不起我自己了！ 这道菜的菜名用了秘制二字来形容，当然是自己根据自己多年吃货的经验想象出来的，我不介意把自己的做法与大家共享，只为大家能同我一样，吃到不同口味的红烧肉。不同的人们根据自己的习惯都有不同的做法，味道也不尽相同。我的秘制的关键就是必须用玫瑰腐乳、冰糖和米醋这三种食材，腐乳和冰糖可以使烧出来的肉色泽红亮，米醋能解腻，令肥肉肥而不腻，此法烧制的红烧肉软糯中略带咸甜，的确回味无穷！",
"ingredients": "五花肉,500g",
"burden": "玫瑰腐乳,适量;盐,适量;八角,适量;草果,适量;香叶,适量;料酒,适量;米醋,适量;生姜,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/0\/45_854851.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_0824e37faf00b71e.jpg",
"step": "1.将五花肉煮至断生状态"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_b6d7329b703f6e85.jpg",
"step": "2.切成大小一致的块"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_6ee9e8dab0516333.jpg",
"step": "3.放在锅内煎"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_b9afd6d4dd81f55c.jpg",
"step": "4.入生姜"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_d0170fbe236421f9.jpg",
"step": "5.放八角草果各一个，香叶一片"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_639b12210745fa41.jpg",
"step": "6.放冰糖"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_c25e0cedd2012f45.jpg",
"step": "7.加料酒"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_eb68327980f022dd.jpg",
"step": "8.加玫瑰腐乳和腐乳汁及适量盐"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_ac17263a11507a41.jpg",
"step": "9.加米醋"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_f5489af5d12b4930.jpg",
"step": "10.加水继续炖"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_8e0cf83cb7306281.jpg",
"step": "11.直至肉变软糯汤汁收干即可"
}]
},
{
"id": "52",
"title": "经典红烧肉",
"tags": "家常菜;咸;半小时-1小时;孕妇;青少年;老人;白领;晚餐;红烧;营养;增强抵抗力;全菜系;1-2人;待客菜;锅子",
"imtro": "红烧肉是热菜菜谱之一，以五花肉为制作主料，红烧肉的做法各地也会稍有不同。南方习惯用酱油（老抽）调色，而北方则偏爱炒糖色儿，红烧肉也是我拿手菜之一，不管是逢年过节还是亲朋聚会都不会少了诱人的红烧肉。红烧肉的特点；浓油赤酱，肥而不腻，入口酥软即化。",
"ingredients": "五花肉,1000g",
"burden": "葱,适量;姜,适量;蒜,适量;八角,2粒;桂皮,1块;干辣椒,1个;酱油,适量;冰糖,适量;盐,适量;料酒,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/1\/52_759155.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_b02a6aa276e3352f.jpg",
"step": "1.五花肉洗净切成大块。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_0cfde36e8061dd9c.jpg",
"step": "2.冷水把肉下锅烧开，把肉焯水。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_4bbe9a903c8b144e.jpg",
"step": "3.准备好 八角 桂皮 葱姜蒜 辣椒。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_887688f6d7716106.jpg",
"step": "4.把锅烧热，下入焯水的五花肉，小火煸炒至五花肉出油。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_72ddd29b5fba09c3.jpg",
"step": "5.下入葱姜蒜 八角 桂皮 辣椒继续煸炒至肉色微黄。盛出。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_90765e3bf8a33c53.jpg",
"step": "6.锅中留底油放入冰糖小火熬至起沫成棕红色。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_95ddaa107b65158b.jpg",
"step": "7.倒入煸炒的五花肉翻炒均匀，使每块肉均匀沾满糖色，"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_68a1aa355f2c62e9.jpg",
"step": "8.加入料酒、酱油"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_b4391bab5b4c70b7.jpg",
"step": "9.加入开水没过肉，盖上锅盖开火煮沸，调小火炖40分钟，"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_22e562a234ed1891.jpg",
"step": "10.烧至肉熟烂、把汤汁收浓即可。"
}]
},
{
"id": "92",
"title": "红烧肉",
"tags": "家常菜;快手菜",
"imtro": "红烧肉，各地各家的做法稍有不同味道即大不一样，中餐的精妙在于食材随意性而产生的变化，南方习惯用酱油(老抽)调色，而北方则偏爱炒糖色。 女人不要为了保持好身材，刻意与美味的肉类食品绝缘哦。其实，很多科学证明，适当的吃肉并不会增加额外的脂肪。 猪肉经过小火煸炒出油后，炖出来的红炒肉是肥而不腻，软烂入味，非常的好吃美味，也非常适合咱们的健康理念，即少油，又解馋，又解腻，下面，为你推荐这种红烧肉的经典做法，不用一滴油就可以做出美味健康的红烧肉。",
"ingredients": "猪后臀尖,1000g",
"burden": "葱段,适量;八角,2个;干辣椒,4个;香叶,4片;桂皮,1块;鲜姜,1块;干山楂片,4片;黄油,适量;老抽,适量;生抽,适量;白糖,适量;开水,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/1\/92_512827.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_472370e29b980b31.jpg",
"step": "1.猪肉清洗干净切成方块，冷水下锅，水开后撇去上面的浮沫。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_04f90c14513aa139.jpg",
"step": "2.焯好的肉块捞出，用温水清洗干净。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_50af1fae3911794d.jpg",
"step": "3.准备好调料：干辣椒，桂皮，香叶，八角，（大蒜也可以不放）。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_12f839ee0920c03b.jpg",
"step": "4.做锅开小火，不放油，把肉块放入反复煸炒，煸炒至肉块有点焦香，有油渗出，关火把肉块捞出。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_bfdc35cde7da929b.jpg",
"step": "5.做锅，用肉块煸出的猪油烧热，放入八角，干辣椒，桂皮，香叶煸炒出香味。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_e21dddc1ffcad36b.jpg",
"step": "6.放入肉块煸炒1-2分钟后捞出备用。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_89ba401801a762fe.jpg",
"step": "7.用锅中剩下的余油放入2勺白糖（这个量可以根据自己的喜好添加，喜欢吃甜一点的就多放点糖），开小火煸炒白糖。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_33f84ea85dcd11c9.jpg",
"step": "8.这是糖色变化的过程"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_bbf69240b5f7211d.jpg",
"step": "9.当糖起小泡，颜色变红就可以了。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_114bbdd5ef3d1255.jpg",
"step": "10.这时快速烹上1勺热水，加入肉块煸炒至肉块颜色变红。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_831b33673ac8c507.jpg",
"step": "11.煸炒至猪肉块上色后，加入适量生抽，老抽（不可多放，放多了颜色就发黑了），黄酒煸炒。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_a377c03180cb6b26.jpg",
"step": "12.加入开水（多放点水，最好一次加足，肉炖熟了可以大火收汤，水少了，中途加水就影响肉质的口感了），再把姜块，葱段，山楂片放入。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_127b81298ad6cf93.jpg",
"step": "13.盖上锅盖，大火烧开，小火炖煮1个小时。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_59ebcf1a60e54619.jpg",
"step": "14.炖煮了一个小时了，汤汁也差不多剩一半了，这时加入6克盐（盐可以根据自己的口味添加，在还有汤的情况下，不要尝出咸味正好，等汤汁收浓就会咸了），小火继续炖煮。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_f4cbb0c04220428e.jpg",
"step": "15.当品尝到肉质软烂，就可以大火收汁，一锅肥而不腻，肉质酥烂，诱人食欲的红烧肉就炖好了，赶快就着小酒，大快朵颐的享受吧"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_372112ff28389c98.jpg",
"step": "16.炎热的夏季，吃一顿少油，解腻，又美味的红烧肉大餐。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_1630281ff0350105.jpg",
"step": "17.再来一张，想吃吗，那就赶紧动手吧，呵呵。"
}]
}],
"totalNum": "306",
"pn": "1",
"rn": "3"
},
"error_code": 0
}
</span>final Vegetable v= gson.fromJson(result, Vegetable.class); 把json数据反射到Vegetable对象
第二种 简单的json样式：
<span style="font-size:18px;"><%@ page language="java" contentType="text/plain; charset=UTF-8" pageEncoding="UTF-8"%>
[{
"id": "45",
"title": "秘制红烧肉",
"tags": "家常菜;热菜;烧;煎;炖;红烧;炒锅",
"imtro": "做红烧肉的豆亲们很多，大家对红烧肉的热爱更不用我说，从名字上就能反映出来。一些高手们对红烧肉的认识更是令我佩服，单单就红烧肉的做法、菜谱都看得我是眼花缭乱，口水横流。单纯的红烧肉我平时还真没做过，再不抓紧时间做一回解解馋，不是对不起别人，而是太对不起我自己了！ 这道菜的菜名用了秘制二字来形容，当然是自己根据自己多年吃货的经验想象出来的，我不介意把自己的做法与大家共享，只为大家能同我一样，吃到不同口味的红烧肉。不同的人们根据自己的习惯都有不同的做法，味道也不尽相同。我的秘制的关键就是必须用玫瑰腐乳、冰糖和米醋这三种食材，腐乳和冰糖可以使烧出来的肉色泽红亮，米醋能解腻，令肥肉肥而不腻，此法烧制的红烧肉软糯中略带咸甜，的确回味无穷！",
"ingredients": "五花肉,500g",
"burden": "玫瑰腐乳,适量;盐,适量;八角,适量;草果,适量;香叶,适量;料酒,适量;米醋,适量;生姜,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/0\/45_854851.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_0824e37faf00b71e.jpg",
"step": "1.将五花肉煮至断生状态"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_b6d7329b703f6e85.jpg",
"step": "2.切成大小一致的块"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_6ee9e8dab0516333.jpg",
"step": "3.放在锅内煎"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_b9afd6d4dd81f55c.jpg",
"step": "4.入生姜"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_d0170fbe236421f9.jpg",
"step": "5.放八角草果各一个，香叶一片"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_639b12210745fa41.jpg",
"step": "6.放冰糖"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_c25e0cedd2012f45.jpg",
"step": "7.加料酒"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_eb68327980f022dd.jpg",
"step": "8.加玫瑰腐乳和腐乳汁及适量盐"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_ac17263a11507a41.jpg",
"step": "9.加米醋"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_f5489af5d12b4930.jpg",
"step": "10.加水继续炖"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/45_8e0cf83cb7306281.jpg",
"step": "11.直至肉变软糯汤汁收干即可"
}]
},
{
"id": "52",
"title": "经典红烧肉",
"tags": "家常菜;咸;半小时-1小时;孕妇;青少年;老人;白领;晚餐;红烧;营养;增强抵抗力;全菜系;1-2人;待客菜;锅子",
"imtro": "红烧肉是热菜菜谱之一，以五花肉为制作主料，红烧肉的做法各地也会稍有不同。南方习惯用酱油（老抽）调色，而北方则偏爱炒糖色儿，红烧肉也是我拿手菜之一，不管是逢年过节还是亲朋聚会都不会少了诱人的红烧肉。红烧肉的特点；浓油赤酱，肥而不腻，入口酥软即化。",
"ingredients": "五花肉,1000g",
"burden": "葱,适量;姜,适量;蒜,适量;八角,2粒;桂皮,1块;干辣椒,1个;酱油,适量;冰糖,适量;盐,适量;料酒,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/1\/52_759155.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_b02a6aa276e3352f.jpg",
"step": "1.五花肉洗净切成大块。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_0cfde36e8061dd9c.jpg",
"step": "2.冷水把肉下锅烧开，把肉焯水。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_4bbe9a903c8b144e.jpg",
"step": "3.准备好 八角 桂皮 葱姜蒜 辣椒。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_887688f6d7716106.jpg",
"step": "4.把锅烧热，下入焯水的五花肉，小火煸炒至五花肉出油。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_72ddd29b5fba09c3.jpg",
"step": "5.下入葱姜蒜 八角 桂皮 辣椒继续煸炒至肉色微黄。盛出。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_90765e3bf8a33c53.jpg",
"step": "6.锅中留底油放入冰糖小火熬至起沫成棕红色。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_95ddaa107b65158b.jpg",
"step": "7.倒入煸炒的五花肉翻炒均匀，使每块肉均匀沾满糖色，"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_68a1aa355f2c62e9.jpg",
"step": "8.加入料酒、酱油"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_b4391bab5b4c70b7.jpg",
"step": "9.加入开水没过肉，盖上锅盖开火煮沸，调小火炖40分钟，"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/52_22e562a234ed1891.jpg",
"step": "10.烧至肉熟烂、把汤汁收浓即可。"
}]
},
{
"id": "92",
"title": "红烧肉",
"tags": "家常菜;快手菜",
"imtro": "红烧肉，各地各家的做法稍有不同味道即大不一样，中餐的精妙在于食材随意性而产生的变化，南方习惯用酱油(老抽)调色，而北方则偏爱炒糖色。 女人不要为了保持好身材，刻意与美味的肉类食品绝缘哦。其实，很多科学证明，适当的吃肉并不会增加额外的脂肪。 猪肉经过小火煸炒出油后，炖出来的红炒肉是肥而不腻，软烂入味，非常的好吃美味，也非常适合咱们的健康理念，即少油，又解馋，又解腻，下面，为你推荐这种红烧肉的经典做法，不用一滴油就可以做出美味健康的红烧肉。",
"ingredients": "猪后臀尖,1000g",
"burden": "葱段,适量;八角,2个;干辣椒,4个;香叶,4片;桂皮,1块;鲜姜,1块;干山楂片,4片;黄油,适量;老抽,适量;生抽,适量;白糖,适量;开水,适量",
"albums": ["http:\/\/img.juhe.cn\/cookbook\/t\/1\/92_512827.jpg"],
"steps": [{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_472370e29b980b31.jpg",
"step": "1.猪肉清洗干净切成方块，冷水下锅，水开后撇去上面的浮沫。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_04f90c14513aa139.jpg",
"step": "2.焯好的肉块捞出，用温水清洗干净。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_50af1fae3911794d.jpg",
"step": "3.准备好调料：干辣椒，桂皮，香叶，八角，（大蒜也可以不放）。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_12f839ee0920c03b.jpg",
"step": "4.做锅开小火，不放油，把肉块放入反复煸炒，煸炒至肉块有点焦香，有油渗出，关火把肉块捞出。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_bfdc35cde7da929b.jpg",
"step": "5.做锅，用肉块煸出的猪油烧热，放入八角，干辣椒，桂皮，香叶煸炒出香味。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_e21dddc1ffcad36b.jpg",
"step": "6.放入肉块煸炒1-2分钟后捞出备用。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_89ba401801a762fe.jpg",
"step": "7.用锅中剩下的余油放入2勺白糖（这个量可以根据自己的喜好添加，喜欢吃甜一点的就多放点糖），开小火煸炒白糖。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_33f84ea85dcd11c9.jpg",
"step": "8.这是糖色变化的过程"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_bbf69240b5f7211d.jpg",
"step": "9.当糖起小泡，颜色变红就可以了。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_114bbdd5ef3d1255.jpg",
"step": "10.这时快速烹上1勺热水，加入肉块煸炒至肉块颜色变红。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_831b33673ac8c507.jpg",
"step": "11.煸炒至猪肉块上色后，加入适量生抽，老抽（不可多放，放多了颜色就发黑了），黄酒煸炒。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_a377c03180cb6b26.jpg",
"step": "12.加入开水（多放点水，最好一次加足，肉炖熟了可以大火收汤，水少了，中途加水就影响肉质的口感了），再把姜块，葱段，山楂片放入。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_127b81298ad6cf93.jpg",
"step": "13.盖上锅盖，大火烧开，小火炖煮1个小时。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_59ebcf1a60e54619.jpg",
"step": "14.炖煮了一个小时了，汤汁也差不多剩一半了，这时加入6克盐（盐可以根据自己的口味添加，在还有汤的情况下，不要尝出咸味正好，等汤汁收浓就会咸了），小火继续炖煮。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_f4cbb0c04220428e.jpg",
"step": "15.当品尝到肉质软烂，就可以大火收汁，一锅肥而不腻，肉质酥烂，诱人食欲的红烧肉就炖好了，赶快就着小酒，大快朵颐的享受吧"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_372112ff28389c98.jpg",
"step": "16.炎热的夏季，吃一顿少油，解腻，又美味的红烧肉大餐。"
},
{
"img": "http:\/\/img.juhe.cn\/cookbook\/s\/1\/92_1630281ff0350105.jpg",
"step": "17.再来一张，想吃吗，那就赶紧动手吧，呵呵。"
}]
}]
</span>
final List<Menu> menu = gson.fromJson(result,new TypeToken<List<Menu>>() {}.getType());
反射构建集合类对象 适用json数组对象.
下面是 第一种解析json 用的映射类：
<span style="font-size:18px;">package com.example.gson;
import java.util.List;
public class Vegetable {
public int resultcode;
public String reason;
public Result result;
public String error_code;
public int getResultcode() {
return resultcode;
}
public void setResultcode(int resultcode) {
this.resultcode = resultcode;
}
public String getReason() {
return reason;
}
public void setReason(String reason) {
this.reason = reason;
}
public Result getResult() {
return result;
}
public void setResult(Result result) {
this.result = result;
}
public String getError_code() {
return error_code;
}
public void setError_code(String error_code) {
this.error_code = error_code;
}</span><span style="font-size:18px;">package com.example.gson;
import java.util.List;
public class Result {
public List<Menu> data;
public String pn;
public String rn;
public List<Menu> getData() {
return data;
}
public void setData(List<Menu> data) {
this.data = data;
}
public String getPn() {
return pn;
}
public void setPn(String pn) {
this.pn = pn;
}
public String getRn() {
return rn;
}
public void setRn(String rn) {
this.rn = rn;
}
}</span><span style="font-size:18px;">package com.example.gson;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
public class Menu {
public String id;
public String title;
public String tags;
public String imtro;
public String ingredients;
public String burden;
//错误了
// public List<Albums> albums;
public ArrayList<String> albums;
public List<Steps> steps;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getTags() {
return tags;
}
public void setTags(String tags) {
this.tags = tags;
}
public String getImtro() {
return imtro;
}
public void setImtro(String imtro) {
this.imtro = imtro;
}
public String getIngredients() {
return ingredients;
}
public void setIngredients(String ingredients) {
this.ingredients = ingredients;
}
public String getBurden() {
return burden;
}
public void setBurden(String burden) {
this.burden = burden;
}
public ArrayList<String> getAlbums() {
return albums;
}
public void setAlbums(ArrayList<String> albums) {
this.albums = albums;
}
public List<Steps> getSteps() {
return steps;
}
public void setSteps(List<Steps> steps) {
this.steps = steps;
}
}
</span>之前把把 albums 属性 写成集合对象 public List<Albums> albums; 出错。<span style="font-size:18px;">package com.example.gson;
public class Steps {
public String img;
public String step;
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
public String getStep() {
return step;
}
public void setStep(String step) {
this.step = step;
}
}</span>
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原文地址：http://blog.csdn.net/u013598111/article/details/51277085
