HttpClient:private static HttpClient httpClient; static { if (httpClient == null) { HttpParams params = new BasicH
HttpClient:
private static HttpClient httpClient;
static {
if (httpClient == null) {
HttpParams params = new BasicHttpParams();
// 设置一些基本参数
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
// 超时设置
ConnManagerParams.setTimeout(params, 1000);
HttpConnectionParams.setConnectionTimeout(params, 2000);
HttpConnectionParams.setSoTimeout(params, 4000);
SchemeReGIStry schReg = new SchemeRegistry();
schReg.register(new Scheme("http", PlainSocketFactory
.getSocketFactory(), 80));
schReg.register(new Scheme("https", SSLSocketFactory
.getSocketFactory(), 443));
// 使用线程安全的连接管理来创建HttpClient
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(
params, schReg);
httpClient = new DefaultHttpClient(conMgr, params);
}
}
@SuppressWarnings("unchecked")
private T getJSONObjectFromUrl(String urlStr,
List params, Class className) throws Exception{
T object = null;
InputStream in = null;
try {
HttpPost httpPost = new HttpPost(urlStr);
if (params != null) {
// List nvps = new ArrayList();
// for (Entry entry : params.entrySet()) {
// nvps.add(new BasicNameValuePair(entry.geTKEy(), entry
// .getValue()));
// }
httpPost.setEntity(new UrlEncodedFORMEntity(params, HTTP.UTF_8));
}
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
if(entity!=null){
in= entity.getContent(); //之前没使用这个造成了大量异常抛出
}
String s = inputStream2String(in,"UTF-8");
jsonResult jsonResult = (JsonResult)JSONObject.parseObject(s, JsonResult.class);
if(jsonResult.getCode() == 200){
Object obj = jsonResult.getData();
if(obj != null){
if(className.isInstance(obj)){
object = (T)(obj);
}
else if(obj instanceof JSONObject){
object= JSONObject.parseObject(obj.toString(), className);
}
}
}else{
throw new Exception(jsonResult.getMsg());
}
if(in!=null){
in.close();
}
} catch (Exception e) {
throw e;
}
return object;
}
new URL():
try{
//省略
URL shixun = new URL(url);
InputStream in = shixun.openStream();
long end = System.currentTimeMillis();
if((end-start)<=5000){ //5s内不响应就跳过
String ret = cn.com.jsoft.jframe.utils.StringUtils.toString(in, "utf-8");
JSONObject obj = JSONObject.fromObject(ret);
if(obj!=null&&obj.getJSONObject("info")!=null&&obj.containsKey("info")==true){
JSONObject info = obj.getJSONObject("info");
JSONArray data = info.getJSONArray("data");
if(data!=null&&data.size()>0){
for(int i=0;i
java将InputStream转为String
public static String inputStream2String(InputStream is, String charset) {
ByteArrayOutputStream baos = null;
try {
baos = new ByteArrayOutputStream();
int i = -1;
while ((i = is.read()) != -1) {
baos.write(i);
}
return baos.toString(charset);
} catch (IOException e) {
e.printStackTrace();
logger.error("FileWRUtil.inputStream2String(InputStream is, String charset) occur error:"
+ e.getMessage());
} finally {
if (null != baos) {
try {
baos.close();
} catch (IOException e) {
e.printStackTrace();
logger.error("FileWRUtil.inputStream2String(InputStream is, String charset) occur error:"
+ e.getMessage());
}
baos = null;
}
}
return null;
}
--结束END--
本文标题: java操作new HttpPost(URL)和 new URL(shixun_ip) 获取流
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