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result = xmlHttp.responseXML.getElementsByTagName("counter");在html中没有tag为counter的元素,你可以把要改变元素根据id或者name来识别就好了
这是firebox提示的错误但是我还是挑不出来(自认水平很差啊,求助)"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394881268"
Update...4881268
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394882272"
Update...4882272
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394883287"
Update...4883287
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394884281"
Update...4884281
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394885279"
Update...4885279
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394886280"
Update...4886280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394887280"
Update...4887280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334394888288"
Update...4888288
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395237297"
Update...5237297
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395238280"
Update...5238280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395239281"
Update...5239281
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395240280"
Update...5240280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395241280"
Update...5241280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395242279"
Update...5242279
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395243282"
Update...5243282
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395244279"
Update...5244279
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395245280"
Update...5245280
"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395246280"
这个报404是没有找到你的servlet,检查一下配置
根据火狐的提示"NetworkError: 404 Not Found - http://localhost:8080/myjsp/UpdateCounter?rmd=1334395245280"
Update...5245280
应该是这个语句的问题,我没有弄懂的
//这里放置一个时间参数是为了让服务器知道这是一个新的请求
xmlHttp.open("GET","UpdateCounter?rmd="+tempParameter);
1、servlet配置问题,这个弄对了才能到后台请求数据
2、servlet的get方法不对,在get方法里面直接调用post就可以了
3、最后返回的数据解析有问题。
不过代码写的很清晰,挺好的