java.net.UnknownHostExce：No route to host: connect 和java.net.UnknownHostException: twechat.sclzsi.cn

在老项目strust1 jdk 1.4的项目中
使用

   HttpClient client = new HttpClient();GetMethod getMethod = new GetMethod("http://twechat.sclzsi.cn/apis/v1/extra/boc/payment/result?bankCode=04&orderId=ESB1202008240881");int code = 0;try {code = client.executeMethod(getMethod);if (code == 200) {String res = getMethod.getResponseBodyAsString();System.out.println(res);}} catch (IOException e) {e.printStackTrace();}

出现错误

java.net.UnknownHostException: twechat.sclzsi.cnat java.net.PlainSocketImpl.connect(PlainSocketImpl.java:153)at java.net.Socket.connect(Socket.java:452)at java.net.Socket.connect(Socket.java:402)at java.net.Socket.<init>(Socket.java:309)at java.net.Socket.<init>(Socket.java:184)at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)at com.sped.app.pubbusiness.bank.ccb.struts.Ccb_B2c_Action.smjf_account_02(Ccb_B2c_Action.java:258)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

修改为ip后

http://10.162.565.41/apis/v1/extra/boc/payment/result?bankCode=04&orderId=ESB1202008240881

错误如下：


java.net.NoRouteToHostException: No route to host: connectat java.net.PlainSocketImpl.socketConnect(Native Method)at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)at java.net.Socket.connect(Socket.java:452)at java.net.Socket.connect(Socket.java:402)at java.net.Socket.<init>(Socket.java:309)at java.net.Socket.<init>(Socket.java:184)

但是令人奇怪的是在自己写的springboot中使用以上的格式httpclient都不会报错，有返回值。

最后这个错如何解决的：直接加端口号
这个错误的原因是：端口号未知，这个还有可能是要设置一个路由把。占时其他解决方式我不太清楚。

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