警告: Parameters: Character decoding failed. Parameter 'id' with value '%u8BA2%u5355' has been ignored. Note that the name and value quoted here may corrupted due to the failed decoding. Use debug level logging to see the original, non-corrupted values.
Enter Servlet Get Method..
OK：
2013-1-16 10:35:49 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet suggest threw exception
java.lang.NullPointerException
at com.ont.demo.suggest.doGet(suggest.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
解决方法：在传递参数前将中文参数进行两次编码，jsp页面获取参数后对中文参数进行一次解码，中文参数就不会变为乱码了！
参考例子：
代码如下:
var str="你好";
function test0(){
window.location="Test.jsp?param0="+str;//直接传递中文参数
}
function test1(){
window.location="Test.jsp?param1="+encodeURI(encodeURI(str));//对中文参数进行双层编码后再传递
}