HttpClient报ConnectionPoolTimeoutException: Timeout waiting for connection from pool-蒲公英云

HttpClient报ConnectionPoolTimeoutException: Timeout waiting for connection from pool

墨蓝 2022-10-24 06:06 62阅读 0赞

【现象】

org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.leaseConnection(PoolingHttpClientConnectionManager.java:286)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$1.get(PoolingHttpClientConnectionManager.java:263)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:190)
    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.example.common.HttpClientTest.posturl(HttpClientSIDTest.java:46)
    at com.example.common.HttpClientTest.posttest(HttpClientSIDTest.java:33)
    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:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

【源代码】

public String posturl(String url,String jsonStr) {
    try (CloseableHttpClient client = HttpClientUtils.getHttpClient()) {
        HttpPost httpPost = new HttpPost(url);
        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");
        StringEntity stringEntity = new StringEntity(jsonStr, "UTF-8");
        httpPost.setEntity(stringEntity);
        HttpResponse response = client.execute(httpPost);
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            HttpEntity entity = response.getEntity();
            Header[] hs=response.getHeaders("Set-Cookie");
            for(Header h:hs){
                String val=h.getValue();
                //System.out.println(val);
                if(val.startsWith("ID=")){
                    return val.substring(3,val.indexOf("; "));
                }
            }
            return EntityUtils.toString(entity, Consts.UTF_8);
        } else {
            EntityUtils.consumeQuietly(response.getEntity());
            return "";
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return "";
}

【优化后的代码】

public String posturl(String url,String jsonStr) {
    try {
        CloseableHttpClient client = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);
        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");
        StringEntity stringEntity = new StringEntity(jsonStr, "UTF-8");
        httpPost.setEntity(stringEntity);
        CloseableHttpResponse response = client.execute(httpPost);
        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
            HttpEntity entity = response.getEntity();
            Header[] hs = response.getHeaders("Set-Cookie");
            response.close();
            for (Header h : hs) {
                String val = h.getValue();
                //System.out.println(val);
                if (val.startsWith("ID=")) {
                    return val.substring(3, val.indexOf("; "));
                }
            }
            return EntityUtils.toString(entity, Consts.UTF_8);
        } else {
            EntityUtils.consumeQuietly(response.getEntity());
            return "";
        }
    }catch (Exception e){e.printStackTrace();}
    return "";
}