volley几种简单请求，GET+POST String+JSON

/**
* 参见:http://blog.csdn.net/lfdfhl/article/details/12223345
* 最近guolin写了几篇文章详细介绍Volley,所以在此比较系统地学习一下. 在本示例中,主要包括:
* 1 利用Volley实现Get,Post请求
* 2 利用Volley实现Json,Map数据请求
* StringRequest
* JsonRequest抽象类，无法实例，有两个直接的子类，JsonObjectRequest和JsonArrayRequest
* 学习资料: http://blog.csdn.net/guolin_blog/article/details/17482095 */
public class MainActivity extends Activity {
private RequestQueue mRequestQueue;
private StringRequest mStringRequest;
private Context mContext;
private JsonObjectRequest mJsonObjectRequest;
private TextView text1, text2, text3, text4;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
text1 = (TextView) findViewById(R.id.text1);
text2 = (TextView) findViewById(R.id.text2);
text3 = (TextView) findViewById(R.id.text3);
text4 = (TextView) findViewById(R.id.text4);
//        volley_StringRequest_GET();
volley_StringRequest_POST();
volley_JsonObjectRequest_POST();//JSONObject
//        volley_JsonObjectRequest_GET();
jsonObjectPostRequest_POST_Map();//Map
}

/**
* 利用StringRequest实现Get请求
*/
private void volley_StringRequest_GET() {
mContext = this;
String url = "http://m.weather.com.cn/data/101010100.html";
// 1 创建RequestQueue对象
mRequestQueue = Volley.newRequestQueue(mContext);
// 2 创建StringRequest对象
mStringRequest = new StringRequest(url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.i("Hanjh", "get请求结果:" + response);
text1.setText("get请求结果:" + response.toString());
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("Hanjh", "get请求错误:" + error.toString());
text1.setText("get请求错误:" + error.toString());
}
}
);
// 3 将StringRequest添加到RequestQueue
mRequestQueue.add(mStringRequest);
}

/**
* 利用StringRequest实现Post请求
*/
private void volley_StringRequest_POST() {
//        String url = "http://ave.bolyartech.com/params.php";
String url = "http://demo.wanzi.cc/users/login";
mContext = this;
mRequestQueue = Volley.newRequestQueue(mContext);
mStringRequest = new StringRequest(Method.POST, url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
text2.setText("volley_post_StringRequest请求结果:" + response);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
text2.setText("volley_post_StringRequest请求错误:"
+ error.toString() + ",errorcode:"
+ error.networkResponse.statusCode);
}
}
) {
//携带参数,当发出POST请求的时候，Volley会尝试调用StringRequest的父类——
// Request中的getParams()方法来获取POST参数
@Override
protected HashMap<String, String> getParams()
throws AuthFailureError {
HashMap<String, String> hashMap = new HashMap<String, String>();
//                hashMap.put("param1", "1");
//                hashMap.put("param2", "20");
hashMap.put("user_password", "hanjiahu");
hashMap.put("user_account", "8615161508006");
return hashMap;
}
};
mRequestQueue.add(mStringRequest);
}

/**
* 利用JsonObjectRequest实现Post请求JSONObject
*/
private void volley_JsonObjectRequest_POST() {
String url = "http://ave.bolyartech.com/params.php";
mContext = this;
mRequestQueue = Volley.newRequestQueue(mContext);
JSONObject object = new JSONObject();
try {
object.put("param1", "44");
object.put("param2", "11");
Log.i("Hanjhpost", "登录上传的信息" + object.toString());
mJsonObjectRequest = new JsonObjectRequest(Method.POST, url,
object, createMyReqSuccessListener(),
createMyReqErrorListener());
mRequestQueue.add(mJsonObjectRequest);
} catch (Exception e) {
e.printStackTrace();
}
}

private Response.Listener<JSONObject> createMyReqSuccessListener() {
return new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
Log.i("Hanjh", "volley_post_JsonObjectRequest请求结果:"
+ response);
text3.setText("volley_post_JsonObjectRequest请求结果:"
+ response.toString());
} catch (Exception e) {
text3.setText("Parse error");
}
}
};
}

private Response.ErrorListener createMyReqErrorListener() {
return new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
if (null != error) {
Log.i("Hanjh",
"volley_post_JsonObjectRequest请求错误:" + error.toString()
);
text3.setText("volley_post_JsonObjectRequest请求错误:" + error.toString());
}
}
};
}

/**
* 利用JsonObjectRequest实现GET数据请求
*/
private void volley_JsonObjectRequest_GET() {
mContext = this;
String url = "http://m.weather.com.cn/data/101010100.html";
// 1 创建RequestQueue对象
mRequestQueue = Volley.newRequestQueue(mContext);
JSONObject object = new JSONObject();
try {
object.put("user_password", "hanjiahu");
object.put("user_account", "8615161508006");
// 2 创建JsonObjectRequest对象
mJsonObjectRequest = new JsonObjectRequest(Method.GET, url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.i("Hanjh_json", "json请求结果:" + response);
text4.setText("json请求结果:" + response.toString()
);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("Hanjh_json", "json请求错误:" + error.toString());
text4.setText("json请求错误:" + error.toString());
}
}
);
// 3 将JsonObjectRequest添加到RequestQueue
mRequestQueue.add(mJsonObjectRequest);
} catch (JSONException e) {
e.printStackTrace();
}

}

/**
* 使用post上传map格式的信息
*/
private void jsonObjectPostRequest_POST_Map() {
String url = "http://demo.wanzi.cc/users/login";
HashMap<String, String> mMap = new HashMap<String, String>();
mMap.put("user_password", "hanjiahu");
mMap.put("user_account", "8615161508006");
RequestQueue requestQueue = Volley.newRequestQueue(this);
JsonObjectPostRequest jsonObjectPostRequest = new JsonObjectPostRequest(url, new Response.Listener<JSONObject>() {

@Override
public void onResponse(JSONObject response) {
text4.setText(response.toString());
Log.d("Hanjh", response.toString());
}
}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, "获取失败", Toast.LENGTH_SHORT).show();
Log.d("Hanjh", error.toString());
}
}, mMap);
requestQueue.add(jsonObjectPostRequest);
}
}