我正在尝试使用HttpClient连接到登录的php页面并传回一个sessionid然后转到一个新页面，使用该sessionid获取与该sessionid相关联的mySQL数据字段。
在第一次请求时，HttpClient可能需要1.5秒，6秒或2分钟。如果第一个请求很慢，则子序列请求似乎更快，而visaversa。
单击Button视图时会发生HttpClient请求
这是我的代码：
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
name = (TextView)findViewById(R.id.name);
user = (EditText) findViewById(R.id.user);
pass = (EditText) findViewById(R.id.pass);
submit = (Button) findViewById(R.id.button1);
submit.setOnClickListener(this);
HttpParams params1 = new BasicHttpParams();
params1.setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
client = new DefaultHttpClient(params1);
httpclient = new DefaultHttpClient();
// Create a local instance of cookie store
cookieStore = new BasicCookieStore();
// Create local HTTP context
}
public void onClick(View v) {
if (v.getId() == R.id.button1) {
//submit.setClickable(false);
String username = user.getText().toString();
String password = pass.getText().toString();
String targetURL = "<<<<LOGIN PHP URL>>>>";
post = new HttpPost(targetURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
params.add(new BasicNameValuePair("password", password));
Log.d("params","params added");
try {
post.setEntity(new UrlEncodedFormEntity(params));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d("entity added","entityadded");
Log.d("preex","PRE EXECUTION");
localContext = new BasicHttpContext();
// Bind custom cookie store to the local context
localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
//submit.setText("Logging In...");
new Thread(new Runnable(){
public void run(){
try {
Log.d("pre","pre execute");
response = client.execute(post,localContext);
Log.d("post","post execute");
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
Log.d("post","FIANLLY");
try {
input = response.getEntity().getContent();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("response: ",convertStreamToString(input));
getFullName(localContext);
}
}
}).start();}
}
private void getFullName(final HttpContext context){
Log.d("called","called");
String targetURL = "<<<<SESSION CHECKER PHP URL>>>>";
//client1 = new DefaultHttpClient();
post1 = new HttpPost(targetURL);
Log.d("","about to call runable....");
// submit.setText("Obtaining Full Name...");
try {
Log.d("pre","CALLING!");
response = client.execute(post1,context);
Log.d("post","called..");
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
Log.d("post","FIANLLY");
try {
//submit.setText("Full Name Obtained!...");
input = response.getEntity().getContent();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Log.d("response: ",convertStreamToString(input));
outputResponse(input);
}
}
private void outputResponse(final InputStream in) {
name.post(new Runnable(){
public void run(){
String fullname=convertStreamToString(in);
name.setText("Full Name is: "+fullname);
}
});
}
private static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
在我设置Http 1.1版之前，花了两倍的时间，但对于我的应用程序，速度不可靠。这是一个非常快速的WiFi连接 - 你能成像Edge或3G速度吗？
那么我可以优化什么呢？
谢谢大家：）
再次感谢！