结合项目中的使用习惯，对Volley进行了一定的封装，新增了GsonRequest类，使用中需要结合Gson包来解析数据；并新增了文件下载和文件上传功能； 在使用中需注意：需要在 HttpServie 类中配置修改URL地址，以Struts为例：比如我们的服务器地址为http://192.168.30.100:8080/VolleyServer, Action的地址为：hospital/hospitalAction!queryHospitalList.do, 那么需要将URL设置成：ttp://192.168.30.100:8080/VolleyServer/?, 实例Request时传入方法参数为：new GsonRequest("hospital/hospitalAction!queryHospitalList.do",........);在中网络请求的过程中会拼接为：http://192.168.30.100:8080/VolleyServer/hospital/hospitalAction!queryHospitalList.do; 如果我们的请求都在一个Action中，那么可以设置URL为http://192.168.30.100:8080/VolleyServer/hospital/hospitalAction!?.do, 实例Request时传入方法参数为：new GsonRequest("queryHospitalList",........)
注意：使用是服务端的返回值需要为gson格式，客户端根据服务端返回的类容定义相应的类；
这儿有几篇博客关于volly的介绍 ：volley缓存、超时重试策略介绍
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
private void doGet() {
RequestParam req = new RequestParam();
req.addStringParam("userName", "mrruby");
req.addStringParam("userPass", "111111");
HttpService.getInstance(getApplicationContext())
.doGetRequest(new GsonRequest<>("LoginServlet", RspLogin.class, req, new Listener<RspLogin>() {
@Override
public void onResponse(RspLogin response) {
// TODO Auto-generated method stub
showToast(response.toString());
}
}, new ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
}
}));
}
private void doPost() {
RequestParam req = new RequestParam();
req.addStringParam("userName", "mrruby");
req.addStringParam("userPass", "111111");
HttpService.getInstance(getApplicationContext())
.doPostRequest(new GsonRequest<>("LoginServlet", RspLogin.class, req, new Listener<RspLogin>() {
@Override
public void onResponse(RspLogin response) {
// TODO Auto-generated method stub
showToast(response.toString());
}
}, new ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
}
}));
}
private void doUpload() {
RequestParam req = new RequestParam();
req.addStringParam("user", "mrruby");
req.addStringParam("userid", "234898018902834");
req.addFileParam("file1", "sdcard/header.png");
req.addFileParam("file2", "sdcard/header.png");
HttpService.getInstance(getApplicationContext())
.doPostRequest(new GsonRequest<>("ImageServlet", RspLogin.class, req, new Listener<RspLogin>() {
@Override
public void onResponse(RspLogin response) {
// TODO Auto-generated method stub
}
}, new ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
}
}, new ProgressListener() {
@Override
public void onProgress(int total, int progress) {
// TODO Auto-generated method stub
Log.d("progress","上传进度：" + progress +"/"+ total);
}
}));
}
private void doFileDown() {
final File saveFile = new File("sdcard/header.png");
FileDownRequest request = new FileDownRequest(
"http://img4.duitang.com/uploads/blog/201311/04/20131104193715_NCexN.thumb.jpeg", saveFile,
new ProgressListener() {
@Override
public void onProgress(int read, int total) {
// TODO Auto-generated method stub
Log.d("progress", read + "/" + total);
}
}, new Listener<String>() {
// 文件保存的路径
@Override
public void onResponse(String response) {
// TODO Auto-generated method stub
showToast(response);
}
}, new ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
}
});
HttpService.getInstance(getApplicationContext()).doGetRequest(request);
}
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