【发布时间】：2014-08-22 16:26:10
【问题描述】：
我有一个向其中添加了 Web 服务的 Vaadin 应用程序，现在似乎只有 Web 服务在 Web 应用程序上运行。我在服务器上看到了 Vaadin 活动，但它的 UI 从未出现，只是一条关于只有 Web 服务可用的消息。
“目前只有通过网络服务提供的功能。”
来源可以在这里找到：https://javydreamercsw@bitbucket.org/javydreamercsw/validation-manager
更新： 我尝试评论网络服务，但仍然得到相同的效果。以下是请求的 web.xml 文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>Vaadin Web Application</display-name>
<context-param>
<description>Vaadin production mode</description>
<param-name>productionMode</param-name>
<param-value>false</param-value>
</context-param>
<!--Comment if not using H2 database-->
<context-param>
<param-name>db.url</param-name>
<param-value>jdbc:h2:file:~/VM/data/validation-manager;CREATE=TRUE;AUTO_SERVER=TRUE;DB_CLOSE_ON_EXIT=FALSE</param-value>
</context-param>
<context-param>
<param-name>db.user</param-name>
<param-value>root</param-value>
</context-param>
<context-param>
<param-name>db.password</param-name>
<param-value/>
</context-param>
<listener>
<listener-class>org.h2.server.web.DbStarter</listener-class>
</listener>
<!--End of H2 database exclusive settings-->
<filter>
<description>Make GB2312\GBK or others to UTF-8 for chineese character support</description>
<filter-name>SetCharacterEncodingFilter</filter-name>
<filter-class>net.sourceforge.javydreamercsw.validation.manager.web.filter.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<listener>
<listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class>
</listener>
<servlet>
<servlet-name>Vaadin Application Servlet</servlet-name>
<servlet-class>com.vaadin.server.VaadinServlet</servlet-class>
<init-param>
<description>Vaadin UI to display</description>
<param-name>UI</param-name>
<param-value>com.validation.manager.ValidationManagerUI</param-value>
</init-param>
<init-param>
<description>Application widgetset</description>
<param-name>widgetset</param-name>
<param-value>com.validation.manager.AppWidgetSet</param-value>
</init-param>
</servlet>
<servlet>
<servlet-name>ValidationManagerService</servlet-name>
<servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Vaadin Application Servlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ValidationManagerService</servlet-name>
<url-pattern>/ValidationManagerService</url-pattern>
</servlet-mapping>
</web-app>
Web 服务注释：
package net.sourceforge.javydreamercsw.validation.manager.web.service;
import com.validation.manager.core.DataBaseManager;
import com.validation.manager.core.VMException;
import com.validation.manager.core.db.Project;
import com.validation.manager.core.db.VmUser;
import com.validation.manager.core.db.controller.ProjectJpaController;
import com.validation.manager.core.server.core.ProjectServer;
import com.validation.manager.core.tool.MD5;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import org.openide.util.Exceptions;
/**
*
* @author Javier A. Ortiz Bultron <javier.ortiz.78@gmail.com>
*/
@WebService(serviceName = "VMWebService")
public class VMWebService {
private Map<String, Object> parameters = new HashMap<>();
/**
* Web service operation
*/
@WebMethod(operationName = "getVMUser")
public VmUser getVMUser(@WebParam(name = "user") final String username,
@WebParam(name = "pass") final String password) throws VMException {
VmUser user = isValidUser(username, password);
if (user == null) {
throw new VMException("Invalid username and/or password!");
}
return user;
}
private VmUser isValidUser(String username, String password) {
VmUser user = null;
parameters.clear();
parameters.put("username", username);
List<Object> result
= DataBaseManager.namedQuery("VmUser.findByUsername",
parameters);
if (result != null) {
for (Object obj : result) {
if (obj instanceof VmUser) {
try {
VmUser vmuser = (VmUser) obj;
if (vmuser.getPassword().equals(MD5.encrypt(password))) {
user = vmuser;
}
} catch (Exception ex) {
Exceptions.printStackTrace(ex);
}
}
}
}
return user;
}
/**
* Web service operation
*/
@WebMethod(operationName = "getProject")
public Project getProject(@WebParam(name = "project") final Project project,
@WebParam(name = "user") final VmUser user) throws VMException {
Project p = null;
if (isValidUser(user.getUsername(), user.getPassword()) != null) {
p = new ProjectServer(project).getEntity();
}
return p;
}
/**
* Web service operation
*/
@WebMethod(operationName = "getRootProjects")
public List<Project> getRootProjects(@WebParam(name = "user") final VmUser user)
throws VMException {
List<Project> projects = new ArrayList<>();
if (isValidUser(user.getUsername(), user.getPassword()) != null) {
ProjectJpaController controller
= new ProjectJpaController(DataBaseManager.getEntityManagerFactory());
for (Project p : controller.findProjectEntities()) {
if (p.getParentProjectId() == null) {
projects.add(p);
}
}
}
return projects;
}
/**
* Web service operation
*/
@WebMethod(operationName = "saveProject")
public boolean saveProject(@WebParam(name = "newProject") final Project newProject,
@WebParam(name = "user") final VmUser user) throws VMException {
boolean result = false;
if (isValidUser(user.getUsername(), user.getPassword()) != null) {
ProjectServer ps = new ProjectServer(newProject);
ps.copy(newProject);
result = true;
}
return result;
}
}
【问题讨论】：
-
我认为您在 web.xml（或通过注释）中的 servlet 映射不正确。请给他们看
-
添加了所需的详细信息。不想在问题中发送太多垃圾邮件。这就是我添加存储库链接的原因。
-
vaadin 的映射在哪里？
-
更新了文件内容，部分改动还没有推送到远程仓库。
-
您可以尝试从网络浏览器访问一些静态 VAADIN/... 资源吗？你的配置对我来说看起来不错。您使用的 servlet 容器前面是否有某种网络服务器？ （你用什么引擎？）
标签： web-services vaadin