java中在tomcat获取绝对路径的问题-原创手记-慕课网

使用SpsringMVC，使用restEasy调试，controller请求设置如下：
Java代码收藏代码
@RequestMapping(value="/list",method=RequestMethod.GET,produces=MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public List<EditTimeout> list(){
List<EditTimeout> list = editImpl.selectAll();
return list;
}

请求，debug跟踪list是返回值没有问题，但是前台页面报如下错误：
Java代码收藏代码
Response Status: 406 (Not Acceptable)

Response RAW返回值如下，（前半部分）
Xml代码收藏代码
HTTP GET http://127.0.0.1:8080/onlineLibrary/rest/system/editTimeout/list
Host: 127.0.0.1:8080

406 Not Acceptable
Date: Sat, 17 Aug 2013 11:01:07 GMT
Server: Apache-Coyote/1.1
Content-Length: 1067
Content-Type: text/html;charset=utf-8
<html><head><title>Apache Tomcat/7.0.34 - Error report</title><style>

后台提示错误：
Java代码收藏代码
2013-08-17 19:01:03,116 DEBUG org.springframework.web.servlet.DispatcherServlet -Last-Modified value for [/onlineLibrary/rest/system/editTimeout/list] is: -1
2013-08-17 19:01:07,606 DEBUG org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver -Resolving exception from handler [public java.util.List<com.online.ol.filter.EditTimeout> com.online.ol.filter.EditTimeoutContoller.list()]: org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
2013-08-17 19:01:07,680 DEBUG org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver -Resolving exception from handler [public java.util.List<com.online.ol.filter.EditTimeout> com.online.ol.filter.EditTimeoutContoller.list()]: org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
2013-08-17 19:01:07,681 DEBUG org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver -Resolving exception from handler [public java.util.List<com.online.ol.filter.EditTimeout> com.online.ol.filter.EditTimeoutContoller.list()]: org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation

引起的原因：
由于设置了@ResponseBody,要把对象转换成json格式，缺少转换依赖的jar包，故此错。
解决办法：
加入依赖的jar，jackson-core-asl-1.9.12.jar，jackson-mapper-asl-1.9.12.jar问题解决。