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Android Tomcat 的应用之客户端部分
最近因为做一个客户端的登录部分,最后选择了使用Tomcat作为servlet服务器,MySQL作为数据库,今天就先写了一下客户端的部分,主要就是Android的网络编程部分,服务器端编程明天再写吧,今天有点累了。相关阅读:Android Tomcat 的应用之服务器部分 http://www.linuxidc.com/Linux/2012-03/55916.htm首先是布局文件,如下:
<?xml
version
=
"1.0"
encoding
=
"utf-8"
?>
<LinearLayout
xmlns:android
=
"http://schemas.android.com/apk/res/android"
android:layout_width
=
"fill_parent"
android:layout_height
=
"fill_parent"
android:orientation
=
"vertical"
>
<TextView
android:layout_width
=
"fill_parent"
android:layout_height
=
"wrap_content"
android:text
=
"@string/hello"
/>
<TableLayout
>
<TableRow
>
<TextView
android:id
=
"@+id/tv_name"
android:layout_width
=
"wrap_content"
android:layout_height
=
"wrap_content"
android:text
=
"@string/nameStr"
/>
<EditText
android:id
=
"@+id/et_name"
android:layout_width
=
"fill_parent"
android:layout_height
=
"wrap_content"
/>
</TableRow>
<TableRow
>
<TextView
android:id
=
"@+id/tv_passwd"
android:layout_width
=
"wrap_content"
android:layout_height
=
"wrap_content"
android:text
=
"@string/passwdStr"
/>
<EditText
android:id
=
"@+id/et_passwd"
android:layout_width
=
"fill_parent"
android:layout_height
=
"wrap_content"
android:password
=
"true"
/>
</TableRow>
<TableRow
>
<Button
android:id
=
"@+id/btn_confirm"
android:layout_width
=
"wrap_content"
android:layout_height
=
"wrap_content"
android:text
=
"@string/btn_confirm"
/>
<Button
android:id
=
"@+id/btn_cancel"
android:layout_width
=
"wrap_content"
android:layout_height
=
"wrap_content"
android:text
=
"@string/btn_cancel"
/>
</TableRow>
</TableLayout>
</LinearLayout>
然后就是进行网络编程部分了,肯定是要用到post方式,这个部分就做一个单独的工具类,大家看一下就明白:
package
com.chenlong12580.app.tomcat;
import
java.io.IOException;
import
org.apache.http.HttpResponse;
import
org.apache.http.client.ClientProtocolException;
import
org.apache.http.client.methods.HttpGet;
import
org.apache.http.client.methods.HttpPost;
import
org.apache.http.impl.client.DefaultHttpClient;
import
org.apache.http.util.EntityUtils;
public
class
HttpUtil {
// 基础URL
public
static
final
String BASE_URL=
"http://222.20.60.132:8080/WebRoot/"
;
// 获得Get请求对象request
public
static
HttpGet getHttpGet(String url){
HttpGet request =
new
HttpGet(url);
return
request;
}
// 获得Post请求对象request
public
static
HttpPost getHttpPost(String url){
HttpPost request =
new
HttpPost(url);
return
request;
}
// 根据请求获得响应对象response
public
static
HttpResponse getHttpResponse(HttpGet request)
throws
ClientProtocolException, IOException{
HttpResponse response =
new
DefaultHttpClient().execute(request);
return
response;
}
// 根据请求获得响应对象response
public
static
HttpResponse getHttpResponse(HttpPost request)
throws
ClientProtocolException, IOException{
HttpResponse response =
new
DefaultHttpClient().execute(request);
return
response;
}
// 发送Post请求,获得响应查询结果
public
static
String queryStringForPost(String url){
// 根据url获得HttpPost对象
HttpPost request = HttpUtil.getHttpPost(url);
String result =
null
;
try
{
// 获得响应对象
HttpResponse response = HttpUtil.getHttpResponse(request);
// 判断是否请求成功
if
(response.getStatusLine().getStatusCode()==
200
){
// 获得响应
result = EntityUtils.toString(response.getEntity());
return
result;
}
}
catch
(ClientProtocolException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
catch
(IOException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
return
null
;
}
// 获得响应查询结果
public
static
String queryStringForPost(HttpPost request){
String result =
null
;
try
{
// 获得响应对象
HttpResponse response = HttpUtil.getHttpResponse(request);
// 判断是否请求成功
if
(response.getStatusLine().getStatusCode()==
200
){
// 获得响应
result = EntityUtils.toString(response.getEntity());
return
result;
}
}
catch
(ClientProtocolException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
catch
(IOException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
return
null
;
}
// 发送Get请求,获得响应查询结果
public
static
String queryStringForGet(String url){
// 获得HttpGet对象
HttpGet request = HttpUtil.getHttpGet(url);
String result =
null
;
try
{
// 获得响应对象
HttpResponse response = HttpUtil.getHttpResponse(request);
// 判断是否请求成功
if
(response.getStatusLine().getStatusCode()==
200
){
// 获得响应
result = EntityUtils.toString(response.getEntity());
return
result;
}
}
catch
(ClientProtocolException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
catch
(IOException e) {
e.printStackTrace();
result =
"网络异常!"
;
return
result;
}
return
null
;
}
}
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