类 : org.apache.http.client.HttpClient;

1. GET实现

Java代码

1. packagecom.yarin.android.Examples_08_02;
3. importjava.io.IOException;
4. importorg.apache.http.HttpResponse;
5. importorg.apache.http.HttpStatus;
6. importorg.apache.http.client.ClientProtocolException;
7. importorg.apache.http.client.HttpClient;
8. importorg.apache.http.client.methods.HttpGet;
9. importorg.apache.http.impl.client.DefaultHttpClient;
10. importorg.apache.http.util.EntityUtils;
11. importandroid.app.Activity;
12. importandroid.content.Intent;
13. importandroid.os.Bundle;
14. importandroid.view.View;
15. importandroid.widget.Button;
16. importandroid.widget.TextView;
18. publicclassActivity02extendsActivity{
19. /**Calledwhentheactivityisfirstcreated.*/
20. @Override
21. publicvoidonCreate(BundlesavedInstanceState){
22. super.onCreate(savedInstanceState);
23. setContentView(R.layout.http);
24. TextViewmTextView=(TextView)this.findViewById(R.id.TextView_HTTP);
25. //http地址
26. StringhttpUrl="http://192.168.1.110:8080/httpget.jsp?par=HttpClient_android_Get";
27. //HttpGet连接对象
28. HttpGethttpRequest=newHttpGet(httpUrl);
29. try{
30. //取得HttpClient对象
31. HttpClienthttpclient=newDefaultHttpClient();
32. //请求HttpClient，取得HttpResponse
33. HttpResponsehttpResponse=httpclient.execute(httpRequest);
34. //请求成功
35. if(httpResponse.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
36. //取得返回的字符串
37. StringstrResult=EntityUtils.toString(httpResponse
38. .getEntity());
39. mTextView.setText(strResult);
40. }else{
41. mTextView.setText("请求错误!");
42. }
43. }catch(ClientProtocolExceptione){
44. mTextView.setText(e.getMessage().toString());
45. }catch(IOExceptione){
46. mTextView.setText(e.getMessage().toString());
47. }catch(Exceptione){
48. mTextView.setText(e.getMessage().toString());
49. }
51. //设置按键事件监听
52. Buttonbutton_Back=(Button)findViewById(R.id.Button_Back);
53. /*监听button的事件信息*/
54. button_Back.setOnClickListener(newButton.OnClickListener(){
55. publicvoidonClick(Viewv){
56. /*新建一个Intent对象*/
57. Intentintent=newIntent();
58. /*指定intent要启动的类*/
59. intent.setClass(Activity02.this,Activity01.class);
60. /*启动一个新的Activity*/
61. startActivity(intent);
62. /*关闭当前的Activity*/
63. Activity02.this.finish();
64. }
65. });
66. }
67. }

2. POST

Java代码

1. packagecom.yarin.android.Examples_08_02;
3. importjava.io.IOException;
4. importjava.util.ArrayList;
5. importjava.util.List;
6. importorg.apache.http.HttpEntity;
7. importorg.apache.http.HttpResponse;
8. importorg.apache.http.HttpStatus;
9. importorg.apache.http.NameValuePair;
10. importorg.apache.http.client.ClientProtocolException;
11. importorg.apache.http.client.HttpClient;
12. importorg.apache.http.client.entity.UrlEncodedFormEntity;
13. importorg.apache.http.client.methods.HttpPost;
14. importorg.apache.http.impl.client.DefaultHttpClient;
15. importorg.apache.http.message.BasicNameValuePair;
16. importorg.apache.http.util.EntityUtils;
17. importandroid.app.Activity;
18. importandroid.content.Intent;
19. importandroid.os.Bundle;
20. importandroid.view.View;
21. importandroid.widget.Button;
22. importandroid.widget.TextView;
24. publicclassActivity03extendsActivity{
25. /**Calledwhentheactivityisfirstcreated.*/
26. @Override
27. publicvoidonCreate(BundlesavedInstanceState){
28. super.onCreate(savedInstanceState);
29. setContentView(R.layout.http);
30. TextViewmTextView=(TextView)this.findViewById(R.id.TextView_HTTP);
31. //http地址
32. StringhttpUrl="http://192.168.1.110:8080/httpget.jsp";
33. //HttpPost连接对象
34. HttpPosthttpRequest=newHttpPost(httpUrl);
35. //使用NameValuePair来保存要传递的Post参数
36. List<NameValuePair>params=newArrayList<NameValuePair>();
37. //添加要传递的参数
38. params.add(newBasicNameValuePair("par","HttpClient_android_Post"));
39. try{
40. //设置字符集
41. HttpEntityhttpentity=newUrlEncodedFormEntity(params,"gb2312");
42. //请求httpRequest
43. httpRequest.setEntity(httpentity);
44. //取得默认的HttpClient
45. HttpClienthttpclient=newDefaultHttpClient();
46. //取得HttpResponse
47. HttpResponsehttpResponse=httpclient.execute(httpRequest);
48. //HttpStatus.SC_OK表示连接成功
49. if(httpResponse.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
50. //取得返回的字符串
51. StringstrResult=EntityUtils.toString(httpResponse.getEntity());
52. mTextView.setText(strResult);
53. }else{
54. mTextView.setText("请求错误!");
55. }
56. }catch(ClientProtocolExceptione){
57. mTextView.setText(e.getMessage().toString());
58. }catch(IOExceptione){
59. mTextView.setText(e.getMessage().toString());
60. }catch(Exceptione){
61. mTextView.setText(e.getMessage().toString());
62. }
63. //设置按键事件监听
64. Buttonbutton_Back=(Button)findViewById(R.id.Button_Back);
65. /*监听button的事件信息*/
66. button_Back.setOnClickListener(newButton.OnClickListener(){
67. publicvoidonClick(Viewv){
68. /*新建一个Intent对象*/
69. Intentintent=newIntent();
70. /*指定intent要启动的类*/
71. intent.setClass(Activity03.this,Activity01.class);
72. /*启动一个新的Activity*/
73. startActivity(intent);
74. /*关闭当前的Activity*/
75. Activity03.this.finish();
76. }
77. });
78. }
79. }

Apacheorg.apache.http.client.HttpClient;

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