模块尚未部署

Question

我正在尝试在 netbeans 8.2 (server-tomcat 8.0.27.0) 上的 Web 应用程序中创建一个 Web 服务，它可以连接到 postgres 上的数据库并读取名为“test”的表。我在 download.java 中有这段代码（名为 serve 的包中的 Web 服务）

下载.java

@WebService(serviceName = "download")
public class Download {

    Connection con=null;    

    private DataSource getJdbcPostgres() throws NamingException, SQLException {
        Context c = new InitialContext();
        DataSource ds=(DataSource) c.lookup("java:comp/env/jdbc/postgres");
        con=ds.getConnection();
        return ds;
   }

   @WebMethod(operationName = "download")
   public String download(@WebParam(name = "username")String username, @WebParam(name = "id")String id) throws ClassNotFoundException, SQLException {

       String sql = "select * from test where id="+id;
       Class.forName("org.postgresql.Driver");
       PreparedStatement pst=con.prepareStatement(sql);
       ResultSet rs=pst.executeQuery();
       ResultSetMetaData rsmd=rs.getMetaData();
       rs.next();
       return "";
   } 

}

这是我的 context.xml 文件（在 META-INF 中）

context.xml

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/service2">
 <Resource name="jdbc/postgres" auth="Container"
      type="javax.sql.DataSource" driverClassName="org.postgresql.Driver"
      url="jdbc:postgresql://localhost:5432/postgres"
      username="someusername" password="somepassword" maxTotal="20" maxIdle="10"
      maxWaitMillis="-1"/>
 </Context>

这里是 web.xml（在 WEB-INF 中）：

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
   <listener>
       <listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class>
   </listener>
   <servlet>
       <servlet-name>download</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>download</servlet-name>
       <url-pattern>/download</url-pattern>
   </servlet-mapping>
   <session-config>
       <session-timeout>
           30
       </session-timeout>
   </session-config>
   <resource-ref>
       <description>postgreSQL Datasource example</description>
       <res-ref-name>jdbc/postgres</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
   </resource-ref>
</web-app>

clean and build 命令成功，但它没有部署在 apache tomcat 服务器上 错误信息（我尝试部署时的输出）：

Checking data source definitions for missing JDBC drivers...
Undeploying ...
undeploy?path=/service2
OK - Undeployed application at context path /service2
In-place deployment at D:\NetBeansProjects\service2\build\web
Deployment is in progress...
deploy?config=file%3A%2FC%3A%2FUsers%2FTRAINE%7E3%2FAppData%2FLocal%2FTemp%2Fcontext1366288511044657094.xml&path=/service2
FAIL - Deployed application at context path /service2 but context failed to start
D:\NetBeansProjects\service2\nbproject\build-impl.xml:1094: The module has not been deployed.
See the server log for details.
BUILD FAILED (total time: 2 seconds)

当我尝试将服务器更改为 GlassFish 4.1.1 时，它显示：

Severe:   WSSERVLET11: failed to parse runtime descriptor: 
com.sun.xml.ws.spi.db.DatabindingException: 
com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of 
IllegalAnnotationExceptions
javax.xml.transform.SourceLocator is an interface, and JAXB can't handle 
interfaces.
    this problem is related to the following location:
        at javax.xml.transform.SourceLocator
        at public javax.xml.transform.SourceLocator 
     serve.jaxws.TransformerConfigurationExceptionBean.locator
        at serve.jaxws.TransformerConfigurationExceptionBean
Caused by: com.sun.xml.ws.spi.db.DatabindingException: 
com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of 
IllegalAnnotationExceptions
javax.xml.transform.SourceLocator is an interface, and JAXB can't handle 
interfaces.
    this problem is related to the following location:
        at javax.xml.transform.SourceLocator
        at public javax.xml.transform.SourceLocator 
serve.jaxws.TransformerConfigurationExceptionBean.locator
        at serve.jaxws.TransformerConfigurationExceptionBean
Severe:   Exception while loading the app
Severe:   Undeployment failed for context /service2
Severe:   Exception while loading the app : java.lang.IllegalStateException: 
ContainerBase.addChild: start: org.apache.catalina.LifecycleException: 
org.apache.catalina.LifecycleException: javax.servlet.ServletException: 
com.sun.xml.ws.transport.http.servlet.WSServletException: WSSERVLET11: failed to 
parse runtime descriptor: com.sun.xml.ws.spi.db.DatabindingException: 
com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of 
IllegalAnnotationExceptions
javax.xml.transform.SourceLocator is an interface, and JAXB can't handle 
interfaces.
    this problem is related to the following location:
        at javax.xml.transform.SourceLocator
        at public javax.xml.transform.SourceLocator serve.jaxws.TransformerConfigurationExceptionBean.locator
        at serve.jaxws.TransformerConfigurationExceptionBean

我是这个领域的新手，所以如果我在某个地方出错或遗漏了什么，请帮助我！

Answer 1

我不知道为什么会这样，但我只是使用 try-catch 而不是 throws 并且它正在被部署！

@WebMethod(operationName = "download")
public String download(@WebParam(name = "username")String username, @WebParam(name = "id")String id) {
try {
        String sql="select * from test";
        Connection conn=myDatasource.getConnection();
        PreparedStatement pst=conn.prepareStatement(sql);
        rs=pst.executeQuery();
        }
    catch (SQLException ex) {
        Logger.getLogger(connect.class.getName()).log(Level.SEVERE, null, ex);
    }
return "someString";
}

谁能建议它为什么不早点工作？虽然我的问题已经解决了，但我很想知道“抛出异常”有什么问题！ 附言这次我在 GlassFish 4.1.1 上运行它