Android : 简单login
1 import java.io.BufferedReader;
2 import java.io.IOException;
3 import java.io.InputStream;
4 import java.io.InputStreamReader;
5 import java.io.UnsupportedEncodingException;
6 import java.util.ArrayList;
7 import java.util.List;
8 import org.apache.http.HttpEntity;
9 import org.apache.http.HttpResponse;
10 import org.apache.http.HttpStatus;
11 import org.apache.http.client.ClientProtocolException;
12 import org.apache.http.client.HttpClient;
13 import org.apache.http.client.entity.UrlEncodedFormEntity;
14 import org.apache.http.client.methods.HttpGet;
15 import org.apache.http.client.methods.HttpPost;
16 import org.apache.http.impl.client.DefaultHttpClient;
17 import org.apache.http.message.BasicNameValuePair;
18 import org.omg.CORBA.NameValuePair;
19 import android.app.Activity;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.SharedPreferences;
23 import android.content.res.Resources;
24 import android.os.Bundle;
25 import android.util.Log;
26 import android.view.View;
27 import android.widget.Button;
28 import android.widget.EditText;
29 import android.widget.Toast;
30
31 public class LoginActivity extends Activity {
32 private EditText edittext_UserName;
33 private EditText edittext_UserPassword;
34 private Button btn_login;
35 private String username, password;
36
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 super.onCreate(savedInstanceState);
40 setContentView(R.layout.login);
41 edittext_UserName = (EditText) findViewById(R.id.edittext_UserName);
42 edittext_UserPassword = (EditText) findViewById(R.id.edittext_UserPassword);
43 btn_login = (Button) findViewById(R.id.btn_login);
44 btn_login.setOnClickListener(new View.OnClickListener() {
45
46 @Override
47 public void onClick(View v) {
48 // TODO Auto-generated method stub
49 username = edittext_UserName.getText().toString();
50 password = edittext_UserPassword.getText().toString();
51 doLogin();
52 }
53 });
54 }
55
56 void doLogin() {
57 Resources res = getResources();
58 if (username != null && password != null
59 && !res.getString(R.string.hint_name).equals(username)
60 && !res.getString(R.string.hint_password).equals(password)) {
61
62 String url = "http://www.zbwen.com/testPrj/login.action";
63 List<NameValuePair> params = new ArrayList<NameValuePair>();
64 params.add(new BasicNameValuePair("user.name", username));
65 params.add(new BasicNameValuePair("user.password", password));
66
67 String result = HttpUtil.sendPostHttpRequest(url, params);
68 if (result != null && result.equals("success")) {
69 Storage.saveString(this, "username", username);
70 Storage.saveString(this, "password", password);
71 Intent intent = new Intent();
72 intent.setClass(LoginActivity.this, WelcomeActivity.class);
73 LoginActivity.this.startActivity(intent);
74 Toast.makeText(LoginActivity.this, "Login success",
75 Toast.LENGTH_LONG).show();
76 } else {
77 System.out.println("fail the request");
78 }
79 }
80 else{
81 System.out.println("fail the request");
82 }
83 return;
84 }
85
86 }
87
88 class HttpUtil {
89
90 private static HttpClient httpClient = null;
91
92 public static HttpClient getHttpClient() {
93 if (httpClient == null) {
94 httpClient = new DefaultHttpClient();
95 }
96 return httpClient;
97 }
98
99 public static String getJSONData(String url)
100 throws ClientProtocolException, IOException {
101 String result = "";
102 HttpGet httpGet = new HttpGet(url);
103 HttpClient httpClient = getHttpClient();
104 HttpResponse httpResponse = null;
105
106 try {
107 httpResponse = httpClient.execute(httpGet);
108 HttpEntity httpEntity = httpResponse.getEntity();
109 if (httpEntity != null) {
110 InputStream inputStream = httpEntity.getContent();
111 result = convertStreamToString(inputStream);
112 }
113 } catch (ClientProtocolException e) {
114 // TODO Auto-generated catch block
115 e.printStackTrace();
116 } catch (IOException e) {
117 throw e;
118 } finally {
119 httpClient.getConnectionManager().shutdown();
120 httpResponse = null;
121 }
122 return result;
123
124 }
125
126 public static String sendPostHttpRequest(String url,
127 List<NameValuePair> params) {
128 HttpPost httpPost = new HttpPost(url);
129 try {
130 // HttpEntity httpEntity = new UrlEncodedFormEntity(params,"utf-8");
131 // httpPost.setEntity(httpEntity);
132 HttpClient httpClient = getHttpClient();
133 HttpResponse httpResponse = httpClient.execute(httpPost);
134 if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
135 String result = "";
136 if (httpResponse.getEntity() != null) {
137 InputStream is = httpResponse.getEntity().getContent();
138 result = convertStreamToString(is);
139 return result.trim();
140 }
141 } else {
142 System.out.println("fail the request");
143 }
144
145 } catch (Exception e) {
146 e.printStackTrace();
147 }
148 return null;
149 }
150
151 public static String convertStreamToString(InputStream is) {
152 BufferedReader reader = null;
153 try {
154 reader = new BufferedReader(new InputStreamReader(is, "UTF-8"),
155 512 * 1024);
156 } catch (UnsupportedEncodingException e1) {
157
158 e1.printStackTrace();
159 }
160 StringBuilder sb = new StringBuilder();
161
162 String line = null;
163 try {
164 while ((line = reader.readLine()) != null) {
165 sb.append(line + "\n");
166 }
167 } catch (IOException e) {
168 Log.e("DataProvier convertStreamToString", e.getLocalizedMessage(),
169 e);
170 } finally {
171 try {
172 is.close();
173 } catch (IOException e) {
174 e.printStackTrace();
175 }
176 }
177 return sb.toString();
178 }
179 }
180
181 class Storage {
182 private static SharedPreferences getSharedPreferences(Context context) {
183 SharedPreferences sharedPreferences = context.getSharedPreferences(
184 "userInfo", Context.MODE_WORLD_READABLE);
185 return sharedPreferences;
186 }
187
188 public static void saveString(Context context, String key, String value) {
189 SharedPreferences sharedPreferences = getSharedPreferences(context);
190 sharedPreferences.edit().putString(key, value).commit();
191
192 }
193
194 public static String getString(Context context, String key) {
195 return getSharedPreferences(context).getString(key, "");
196 }
197 }
2 import java.io.IOException;
3 import java.io.InputStream;
4 import java.io.InputStreamReader;
5 import java.io.UnsupportedEncodingException;
6 import java.util.ArrayList;
7 import java.util.List;
8 import org.apache.http.HttpEntity;
9 import org.apache.http.HttpResponse;
10 import org.apache.http.HttpStatus;
11 import org.apache.http.client.ClientProtocolException;
12 import org.apache.http.client.HttpClient;
13 import org.apache.http.client.entity.UrlEncodedFormEntity;
14 import org.apache.http.client.methods.HttpGet;
15 import org.apache.http.client.methods.HttpPost;
16 import org.apache.http.impl.client.DefaultHttpClient;
17 import org.apache.http.message.BasicNameValuePair;
18 import org.omg.CORBA.NameValuePair;
19 import android.app.Activity;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.SharedPreferences;
23 import android.content.res.Resources;
24 import android.os.Bundle;
25 import android.util.Log;
26 import android.view.View;
27 import android.widget.Button;
28 import android.widget.EditText;
29 import android.widget.Toast;
30
31 public class LoginActivity extends Activity {
32 private EditText edittext_UserName;
33 private EditText edittext_UserPassword;
34 private Button btn_login;
35 private String username, password;
36
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 super.onCreate(savedInstanceState);
40 setContentView(R.layout.login);
41 edittext_UserName = (EditText) findViewById(R.id.edittext_UserName);
42 edittext_UserPassword = (EditText) findViewById(R.id.edittext_UserPassword);
43 btn_login = (Button) findViewById(R.id.btn_login);
44 btn_login.setOnClickListener(new View.OnClickListener() {
45
46 @Override
47 public void onClick(View v) {
48 // TODO Auto-generated method stub
49 username = edittext_UserName.getText().toString();
50 password = edittext_UserPassword.getText().toString();
51 doLogin();
52 }
53 });
54 }
55
56 void doLogin() {
57 Resources res = getResources();
58 if (username != null && password != null
59 && !res.getString(R.string.hint_name).equals(username)
60 && !res.getString(R.string.hint_password).equals(password)) {
61
62 String url = "http://www.zbwen.com/testPrj/login.action";
63 List<NameValuePair> params = new ArrayList<NameValuePair>();
64 params.add(new BasicNameValuePair("user.name", username));
65 params.add(new BasicNameValuePair("user.password", password));
66
67 String result = HttpUtil.sendPostHttpRequest(url, params);
68 if (result != null && result.equals("success")) {
69 Storage.saveString(this, "username", username);
70 Storage.saveString(this, "password", password);
71 Intent intent = new Intent();
72 intent.setClass(LoginActivity.this, WelcomeActivity.class);
73 LoginActivity.this.startActivity(intent);
74 Toast.makeText(LoginActivity.this, "Login success",
75 Toast.LENGTH_LONG).show();
76 } else {
77 System.out.println("fail the request");
78 }
79 }
80 else{
81 System.out.println("fail the request");
82 }
83 return;
84 }
85
86 }
87
88 class HttpUtil {
89
90 private static HttpClient httpClient = null;
91
92 public static HttpClient getHttpClient() {
93 if (httpClient == null) {
94 httpClient = new DefaultHttpClient();
95 }
96 return httpClient;
97 }
98
99 public static String getJSONData(String url)
100 throws ClientProtocolException, IOException {
101 String result = "";
102 HttpGet httpGet = new HttpGet(url);
103 HttpClient httpClient = getHttpClient();
104 HttpResponse httpResponse = null;
105
106 try {
107 httpResponse = httpClient.execute(httpGet);
108 HttpEntity httpEntity = httpResponse.getEntity();
109 if (httpEntity != null) {
110 InputStream inputStream = httpEntity.getContent();
111 result = convertStreamToString(inputStream);
112 }
113 } catch (ClientProtocolException e) {
114 // TODO Auto-generated catch block
115 e.printStackTrace();
116 } catch (IOException e) {
117 throw e;
118 } finally {
119 httpClient.getConnectionManager().shutdown();
120 httpResponse = null;
121 }
122 return result;
123
124 }
125
126 public static String sendPostHttpRequest(String url,
127 List<NameValuePair> params) {
128 HttpPost httpPost = new HttpPost(url);
129 try {
130 // HttpEntity httpEntity = new UrlEncodedFormEntity(params,"utf-8");
131 // httpPost.setEntity(httpEntity);
132 HttpClient httpClient = getHttpClient();
133 HttpResponse httpResponse = httpClient.execute(httpPost);
134 if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
135 String result = "";
136 if (httpResponse.getEntity() != null) {
137 InputStream is = httpResponse.getEntity().getContent();
138 result = convertStreamToString(is);
139 return result.trim();
140 }
141 } else {
142 System.out.println("fail the request");
143 }
144
145 } catch (Exception e) {
146 e.printStackTrace();
147 }
148 return null;
149 }
150
151 public static String convertStreamToString(InputStream is) {
152 BufferedReader reader = null;
153 try {
154 reader = new BufferedReader(new InputStreamReader(is, "UTF-8"),
155 512 * 1024);
156 } catch (UnsupportedEncodingException e1) {
157
158 e1.printStackTrace();
159 }
160 StringBuilder sb = new StringBuilder();
161
162 String line = null;
163 try {
164 while ((line = reader.readLine()) != null) {
165 sb.append(line + "\n");
166 }
167 } catch (IOException e) {
168 Log.e("DataProvier convertStreamToString", e.getLocalizedMessage(),
169 e);
170 } finally {
171 try {
172 is.close();
173 } catch (IOException e) {
174 e.printStackTrace();
175 }
176 }
177 return sb.toString();
178 }
179 }
180
181 class Storage {
182 private static SharedPreferences getSharedPreferences(Context context) {
183 SharedPreferences sharedPreferences = context.getSharedPreferences(
184 "userInfo", Context.MODE_WORLD_READABLE);
185 return sharedPreferences;
186 }
187
188 public static void saveString(Context context, String key, String value) {
189 SharedPreferences sharedPreferences = getSharedPreferences(context);
190 sharedPreferences.edit().putString(key, value).commit();
191
192 }
193
194 public static String getString(Context context, String key) {
195 return getSharedPreferences(context).getString(key, "");
196 }
197 }
