背景:tomcat-5.5.12设置为远程服务器 服务端设置: Step 1) 打开${tomcat_home}/conf/tomcat-users.xml 加入如下代码: <rolerolename="test"/><userusername="a"password="b"roles="test"/> Step2)修改web.xml <security-constraint><display-name>ExampleSecurityConstraint</display-name><web-resource-collection><web-resource-name>ProtectedArea</web-resource-name><!--Definethecontext-relativeURL(s)tobeprotected--><url-pattern>/test/*</url-pattern><!--Ifyoulisthttpmethods,onlythosemethodsareprotected--><http-method>DELETE</http-method><http-method>GET</http-method><http-method>POST</http-method><http-method>PUT</http-method></web-resource-collection><auth-constraint><!--Anyonewithoneofthelistedrolesmayaccessthisarea--><role-name>test</role-name></auth-constraint></security-constraint><!--DefaultloginconfigurationusesBASICauthentication--><login-config><auth-method>BASIC</auth-method><realm-name>WebServiceForm-BasedAuthenticationArea</realm-name></login-config> 对网站/test/下的任何请求采用基本安全认证 客户端编程: 客户端通过httpclient-2.0.2请求该url,方法如下: HttpClienthttpClient=newHttpClient();Credentialsdefaultcreds=newUsernamePasswordCredentials("a","b");httpClient.getState().setCredentials("WebServiceForm-BasedAuthenticationArea","www.cat.cn",defaultcreds);Stringurl="http://www.cat.cn/test/index.do";GetMethodmethod=newGetMethod(url);method.setDoAuthentication(true);httpClient.executeMethod(method);Strings=method.getResponseBodyAsString();System.out.println(s);