嘗試使用Postman POST到REST時出現異常

Question

在這里，我試圖使用postman為'Rest應用程序'提供'表單數據'，但我在下面面對這個例外。

郵差客戶 < - 如果我在這里做錯了什么，請檢查此圖像並告訴我

HTTP Status 500 - Servlet.init() for servlet jersey threw exception
type Exception report message Servlet.init() for servlet jersey threw exception description The server encountered an internal error that prevented it from fulfilling this request. 

exception

javax.servlet.ServletException: Servlet.init() for servlet jersey threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)
root cause

com.sun.jersey.spi.inject.Errors$ErrorMessagesException
    com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
    com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:136)
    com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:199)
    com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:795)
    com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:790)
    com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:509)
    com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:339)
    com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:605)
    com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:207)
    com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394)
    com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.Err[enter image description here][1]orReportValve.invoke(ErrorReportValve.java:79)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/9.0.0.M11 logs.

Apache Tomcat/9.0.0.M11

這是我的類做POST，我已經把所有的參數作為'create'方法中的字符串，然后我根據需要將它們分別解析為'double'和'int'。 （如果有任何其他方法直接解析整數，請告訴我）。

        package com.glarimy.lib.rs;
        import javax.ws.rs.Consumes;
        import javax.ws.rs.DELETE;
        import javax.ws.rs.FormParam;
        import javax.ws.rs.GET;
        import javax.ws.rs.POST;
        import javax.ws.rs.PUT;
        import javax.ws.rs.Path;
        import javax.ws.rs.PathParam;
        import javax.ws.rs.Produces;
        import javax.ws.rs.QueryParam;
        import javax.ws.rs.core.MediaType;
        import javax.ws.rs.core.Response;

        import org.glassfish.jersey.media.multipart.FormDataParam;

        import com.glarimy.lib.api.Book;
        import com.glarimy.lib.api.BookDAL;
        import com.glarimy.lib.db.BookDALTrans;
        import com.google.gson.Gson;

        @Path("/lib")
        public class LibraryController 
        {
            private BookDAL bookdal;
            //private String newTitle;
            public LibraryController() 
            {
                bookdal = BookDALTrans.getInstance();
            }

            //Adding a book
            @POST
            @Path("/addbook")
            @Consumes({MediaType.MULTIPART_FORM_DATA})//Accepts only strings
            @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
            public Response create(@FormDataParam("title") String title, @FormDataParam("author") String author, 
                                   @FormDataParam("price") String price, @FormDataParam("pages") String pages)
            {
                System.out.println("hello");
                double price1 = Double.parseDouble(price);
                int pages1=Integer.parseInt(pages);
                Book book=new Book(title,author,price1,pages1);
                bookdal.add(book);
                return Response.ok().entity(book).build();
            }


            //Searching for a book
            @GET
            @Path("/findbook/{isbn}")
            @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
            public Response find(@PathParam("isbn1") int isbn1) 
            {
                Book book=bookdal.find(isbn1);
                return Response.ok().entity(book).build();      
            }


            //Updating a book
            @PUT
            @Path("/updatebook/{isbn}")
            @Consumes({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
            @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
            public Response update(@PathParam("isbn") int isbn, @FormParam("title") String newTitle, 
                                   @FormParam("author") String author,@FormParam("price") double price, 
                                   @FormParam("noOfPages") int pages)
            {
                Book book=bookdal.update(isbn,newTitle,author,price,pages);
                return Response.ok().entity(book).build();
            }


            //Deleting a book
            @DELETE
            @Path("/deletebook")
            public Response remove(@FormParam("isbn") int isbn) 
            {
                bookdal.delete(isbn);
                return Response.ok().build();
            }
        }

Here is my web.xml file 

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
      <servlet>
        <servlet-name>jersey</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
          <param-name>jersey.config.server.provider.packages</param-name>
          <param-value>com.glarimy.lib.rs</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
        <servlet-name>jersey</servlet-name>
        <url-pattern>/glarimy/*</url-pattern>
      </servlet-mapping>
    </web-app>



This is my POM file

    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.glarimy.rest</groupId>
    <artifactId>library</artifactId>
    <packaging>war</packaging>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-json</artifactId>
            <version>1.19</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-servlet</artifactId>
            <version>1.19</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-server</artifactId>
            <version>1.19</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.40</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-multipart</artifactId>
            <version>2.17</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>mysql</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <configuration>
                    <outputDirectory>D:\Glarimy\Programs\tomcat\webapps</outputDirectory>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <version>4</version>
</project>

Answer 1

我解決了這個問題。 我通過替換更改了POM文件

 <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-multipart</artifactId>
            <version>2.17</version>
 </dependency>

with

   <dependency>
            <groupId>com.sun.jersey.contribs</groupId>
            <artifactId>jersey-multipart</artifactId>
            <version>1.19</version>
   </dependency>

然后，evereything應該很好。