bug宝典JAVA篇之构造函数问题

下面是个低级错误:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.dzmsoft.fontal.base.dto.AdminFirstDto]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.dzmsoft.fontal.base.dto.AdminFirstDto.<init>()    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:980) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) ~[javax.servlet-api-3.1.0.jar:3.1.0]    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at com.dzmsoft.framework.base.web.filter.CharFilter.doFilter(CharFilter.java:139) ~[classes/:na]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) ~[shiro-web-1.2.3.jar:1.2.3]    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1476) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501) [jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) [jetty-security-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429) [jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.Server.handle(Server.java:370) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) [jetty-http-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) [jetty-http-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696) [jetty-io-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53) [jetty-io-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) [jetty-util-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) [jetty-util-8.1.16.v20140903.jar:8.1.16.v20140903]    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.dzmsoft.fontal.base.dto.AdminFirstDto]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.dzmsoft.fontal.base.dto.AdminFirstDto.<init>()    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:107) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:137) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:80) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:106) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:99) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:161) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    ... 49 common frames omittedCaused by: java.lang.NoSuchMethodException: com.dzmsoft.fontal.base.dto.AdminFirstDto.<init>()    at java.lang.Class.getConstructor0(Class.java:3082) ~[na:1.8.0_60]    at java.lang.Class.getDeclaredConstructor(Class.java:2178) ~[na:1.8.0_60]    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:104) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]    ... 62 common frames omitted09:38:11.011 WARN  org.eclipse.jetty.servlet.ServletHandler - /fontal/fontalUser/adminFirstorg.springframework.beans.BeanInstantiationException: Failed to instantiate [com.dzmsoft.fontal.base.dto.AdminFirstDto]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.dzmsoft.fontal.base.dto.AdminFirstDto.<init>()    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:107) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:137) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:80) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:106) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:99) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:161) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) ~[javax.servlet-api-3.1.0.jar:3.1.0]    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844) ~[spring-webmvc-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at com.dzmsoft.framework.base.web.filter.CharFilter.doFilter(CharFilter.java:139) ~[classes/:na]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) ~[shiro-core-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) ~[shiro-web-1.2.3.jar:1.2.3]    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) ~[shiro-web-1.2.3.jar:1.2.3]    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.5.RELEASE.jar:4.2.5.RELEASE]    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1476) ~[jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501) [jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) [jetty-security-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429) [jetty-servlet-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.Server.handle(Server.java:370) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) [jetty-http-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) [jetty-http-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) [jetty-server-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696) [jetty-io-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53) [jetty-io-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) [jetty-util-8.1.16.v20140903.jar:8.1.16.v20140903]    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) [jetty-util-8.1.16.v20140903.jar:8.1.16.v20140903]    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]Caused by: java.lang.NoSuchMethodException: com.dzmsoft.fontal.base.dto.AdminFirstDto.<init>()    at java.lang.Class.getConstructor0(Class.java:3082) ~[na:1.8.0_60]    at java.lang.Class.getDeclaredConstructor(Class.java:2178) ~[na:1.8.0_60]    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:104) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]    ... 62 common frames omitted

controller

 /**     * 超级用户首次登录，更改配置信息     *      * @param adminFirstDto     * @return     */    @RequestMapping(value = "adminFirst", method = RequestMethod.POST)    @ResponseBody    public BaseResponse adminFirst(AdminFirstDto adminFirstDto) {        boolean flag = fontalUserService.adminFirst(adminFirstDto);        BaseResponse baseResponse = flag ? new BaseResponse(true, "编辑成功") : new BaseResponse(false,                "编辑失败");        return baseResponse;    }

AdminFirstDto
查看构造函数，发现只有下面这个

    public AdminFirstDto(String id, String username){        this.id = id;        this.username = username;    }

原来缺少默认的构造函数，加上就好了

  public AdminFirstDto(){    }