Spring mvc 404问题

写了一个最简单的spring mvc项目，结果访问Controller指定的路径报404错误。后来看到tomcat启动时的控制台信息中有错误，错误信息如下

信息: Loading XML bean definitions from ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]
2012-6-2 19:20:26 org.springframework.web.context.ContextLoader initWebApplicationContext
严重: Context initialization failed
java.lang.NoClassDefFoundError: org/springframework/expression/PropertyAccessor
	at org.springframework.context.support.AbstractApplicationContext.prepareBeanFactory(AbstractApplicationContext.java:538)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:439)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4205)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4704)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
	at org.apache.catalina.core.StandardService.start(StandardService.java:525)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: org.springframework.expression.PropertyAccessor
	at ....

是找不到类定义文件，但是检查过好多遍，该引用的jar文件肯定是引用了。
很无奈只有问google了，结果从csdn上发现很多人遇到这个问题。原因是tomcat启动时没有把jar文件复制到WEB-INF/lib目录下。只要手动把需要的jar文件复制到这个目录下问题就解决了。
附csdn讨论此问题的帖子在这里：http://topic.csdn.net/u/20070112/13/57fd4238-1f29-4eb1-ad6d-c88753c7f344.html
这个悲催的问题居然存在了四年了。希望以后不会有人再遇到这个问题。

今天遇到了同样的问题，一直报404。 解决问题的方法是把eclipse的服务器删除重新建服务器。问题就解决了。重启eclipse没有用。

评论

3 楼 zhige1202 2013-02-28  

OK了，我知道了，谢谢！

2 楼 yukaizhao 2013-02-28  

tomcat默认端口是8080，下面地址访问
http://localhost:8080/your-app-name

your-app-name是你的web项目名字

1 楼 zhige1202 2013-02-27  

我想知道这个controller怎么用，我跟公司学做项目。

package *****;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import org.codehaus.jackson.map.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.inspur.kpi.kpisearch.HomeController;
import com.inspur.kpi.metacore.domain.DimensionType;
import com.inspur.kpi.metacore.domain.UnitKpi;
import com.inspur.kpi.metacore.service.DimensionTypeService;
import com.inspur.kpi.metacore.service.MetaKpiInfoService;

@Controller
public class KpiFinderController {
	private static final Logger log = LoggerFactory
			.getLogger(HomeController.class);

	@Autowired()
	@Qualifier("metaKpiInfoService")
	MetaKpiInfoService metaKpiInfoService;
	
	@Autowired()
	@Qualifier("dimensionTypeService")
	DimensionTypeService dimensionTypeService;

	public KpiFinderController() {
		super();
		log.debug("指标查找controller已被加载");
	}

	@RequestMapping(value = "/finder/index")
	public String index(Model model) {
		return "finder/index";
	}

	@RequestMapping(value = "/finder/findKpi")
	public String findKpi(Model model) {
		return "finder/result";
	}

	@RequestMapping(value = "/finder/findUnitKpi")
	public void findUnitKpi(Model model, HttpServletRequest request,
			HttpServletResponse response) throws Exception {

		UnitKpi example = new UnitKpi();
		example.setName(request.getParameter("term"));
		List<UnitKpi> news = metaKpiInfoService.findUnitKpiByExample(example);
         @SuppressWarnings({ "rawtypes", "unchecked" })
		List<String> list = new ArrayList(news.size());
         for (UnitKpi unitKpi : news) {
			list.add(unitKpi.getName());
		}
         ObjectMapper om = new ObjectMapper();
         String json_str = om.writeValueAsString(list);
		response.getWriter().print(json_str);
	}
	
	@RequestMapping(value = "/finder/finddims")
	public String findDims(Model model, HttpServletRequest request,
			HttpServletResponse response){
		List<DimensionType> dimlist = dimensionTypeService.findDimTypeAll();
		request.setAttribute("dimlist", dimlist);
		return "finder/finddims";
	}

}

可是我不知道这个在tomcat启动后该怎么访问。求教！