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分享httpclient4.5.1 怎么实现请求超时重发
发送post请求代码如下经常会请求发不出去卡住，一次卡住后面的请求都发不出去了，怎么解决这个问题，怎么设置超时然后实现重发机制！很急啊！
// 接口地址
private static CloseableHttpClient client =HttpClientBuilder.create().build();
public static String postBody(String url, String parameters) {
String responseString = null;
HttpPost post = new HttpPost(url);
CloseableHttpResponse response=null;
try {
// 建立一个NameValuePair数组，用于存储欲传送的参数
post.addHeader("Content-type","text/xml");
post.setHeader("Accept", "text/xml");
StringEntity entity = new StringEntity(parameters, Charset.forName("UTF-8"));
post.setEntity(entity);
log.info("post start, url: " + url + ", entity: " + entity);
response = client.execute(post);
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
responseString = EntityUtils.toString(response.getEntity());
}
log.info("post end, url: " + url + ", entity: " + entity + ", response: " + responseString);
//response.close();
} catch (IOException e) {
log.error(e);
e.printStackTrace();
} finally {
}
return responseString;
}
// 接口地址
private static CloseableHttpClient client =HttpClientBuilder.create().build();
public static String postBody(String url, String parameters) {
String responseString = null;
HttpPost post = new HttpPost(url);
CloseableHttpResponse response=null;
try {
// 建立一个NameValuePair数组，用于存储欲传送的参数
post.addHeader("Content-type","text/xml");
post.setHeader("Accept", "text/xml");
StringEntity entity = new StringEntity(parameters, Charset.forName("UTF-8"));
post.setEntity(entity);
log.info("post start, url: " + url + ", entity: " + entity);
response = client.execute(post);
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
responseString = EntityUtils.toString(response.getEntity());
}
log.info("post end, url: " + url + ", entity: " + entity + ", response: " + responseString);
//response.close();
} catch (IOException e) {
log.error(e);
e.printStackTrace();
} finally {
}
return responseString;
}
...全文
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大非鱼 2019-12-28
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如果有异常的话，response就是空的，根本不会到判断状态码那一步，只能是在外面定义一个计数器，while循环执行
110成成 2017-04-20
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捕获超时异常，在里面进行重发。
huyawen123 2017-04-20
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public static String postBody(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
URLConnection conn;
conn = realUrl.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestProperty("Content-Type", "text/xml");
out = new PrintWriter(conn.getOutputStream());
out.print(param);
out.flush();
in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e){
e.printStackTrace();
}
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
我把请求改成这样了！本地测试可以执行，想问下有什么区别！为什么要用上面那种！上面方法的连接好像一直处于没有关闭状态求分析下
huyawen123 2017-04-20
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刚查看日志发现执行这段代码有时候会抛出这样的异常：
org.apache.http.impl.execchain.RequestAbortedException: Request aborted
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:193)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
at com.glocalme.common.APIHttpClient.postBody(APIHttpClient.java:176)
at com.glocalme.application.service.officeial.impl.ProductOrderServiceImpl.createOTAOrder(ProductOrderServiceImpl.java:492)
at com.glocalme.quartz.OmsOrderCheck.lambda$sendCommentMailScheduled$0(OmsOrderCheck.java:83)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at com.glocalme.quartz.OmsOrderCheck.sendCommentMailScheduled(OmsOrderCheck.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2014)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2048)
at org.apache.http.pool.PoolEntryFuture.await(PoolEntryFuture.java:138)
at org.apache.http.pool.AbstractConnPool.getPoolEntryBlocking(AbstractConnPool.java:306)
at org.apache.http.pool.AbstractConnPool.access$000(AbstractConnPool.java:64)
at org.apache.http.pool.AbstractConnPool$2.getPoolEntry(AbstractConnPool.java:192)
at org.apache.http.pool.AbstractConnPool$2.getPoolEntry(AbstractConnPool.java:185)
at org.apache.http.pool.PoolEntryFuture.get(PoolEntryFuture.java:107)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.leaseConnection(PoolingHttpClientConnectionManager.java:276)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$1.get(PoolingHttpClientConnectionManager.java:263)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:190)
... 25 more
要怎么解决
李德胜1995 2017-04-20
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写一个循环。。你要重试几次就循环几次，如果请求超时会报错ConnectTimeoutException异常，用try..cacth捕获，重新执行请求，如果没有报错，说明执行成功，直接break;
huyawen123 2017-04-20
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我想让他超时后重发呢
licip 2017-04-20
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while(true){
HttpPost post = new HttpPost(url);
CloseableHttpResponse response=null;
try {
// 建立一个NameValuePair数组，用于存储欲传送的参数
post.addHeader("Content-type","text/xml");
post.setHeader("Accept", "text/xml");
StringEntity entity = new StringEntity(parameters, Charset.forName("UTF-8"));
post.setEntity(entity);
log.info("post start, url: " + url + ", entity: " + entity);
response = client.execute(post);
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
responseString = EntityUtils.toString(response.getEntity());
break;
}
log.info("post end, url: " + url + ", entity: " + entity + ", response: " + responseString);
//response.close();
} catch (IOException e) {
log.error(e);
e.printStackTrace();
} finally {
}
}
在外面套一层while循环，如果请求ok了，就break退出来，如果response.getStatusLine().getStatusCode() != HttpStatus.SC_OK
让循环再继续
我爱娃哈哈 2017-04-20
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你上面不是有判断httpstatus状态码么，状态码不为正常的时候再发一次就行了啊，就是加一个else就行了
huyawen123 2017-04-20
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能具体给出吗！设置超时时间然后从发代码！就在我的代码基础上加本人小菜！谢谢
