多线程使用时出现下面错误怎么解决
java.net.BindException: Address already in use: JVM_Bind
at java.net.DualStackPlainSocketImpl.bind0(Native Method)
at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:106)
at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:190)
at java.net.Socket.bind(Socket.java:631)
at java.net.Socket.<init>(Socket.java:423)
at java.net.Socket.<init>(Socket.java:280)
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.baidu.utils.HttpUtil.httpDownload(HttpUtil.java:68)
at com.baidu.utils.HtmlparserUtil.appSave(HtmlparserUtil.java:68)
at com.baidu.controller.MyThread.run(MyThread.java:72)