Java 一个页面上实体实例的多个表单-未创建表单_Java_Spring_Forms_Spring Mvc

Java 一个页面上实体实例的多个表单-未创建表单

java spring forms spring-mvc

Java 一个页面上实体实例的多个表单-未创建表单,java,spring,forms,spring-mvc,Java,Spring,Forms,Spring Mvc,我正在学习SpringMVC。我有一个页面，其中列出了Image实体类的实例。每个图像都有一个带有输入字段的表单。这些输入字段用于编辑图像url。但它给出了一个错误： InputTag - Neither BindingResult nor plain target object for bean name 'image' available as request attribute 尝试打开包含表单的页面时出错如何解决编辑这不是POST控制器方法的问题，因为表单页不是因为错误而创建的。

我正在学习SpringMVC。我有一个页面，其中列出了Image实体类的实例。每个图像都有一个带有输入字段的表单。这些输入字段用于编辑图像url。但它给出了一个错误：

InputTag - Neither BindingResult nor plain target object for bean name 'image' available as request attribute

尝试打开包含表单的页面时出错

如何解决

编辑

这不是POST控制器方法的问题，因为表单页不是因为错误而创建的。因此，我将POST方法的一部分从问题中删除

编辑结束

这些是文件和更大的错误消息：

tk/trzcy/gallery/controllers/ImageController.java

package tk.trzczy.gallery.controllers;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;
import tk.trzczy.gallery.domain.Image;
import tk.trzczy.gallery.services.ImageService;
import tk.trzczy.gallery.services.ImageCategoryService;
import tk.trzczy.gallery.services.UserService;
import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.Date;

@Controller
public class ImageController {

    @Autowired
    private ImageService imageService;

    @Autowired
    private UserService userService;

    @Autowired
    private ImageCategoryService imageCategoryService;

    @RequestMapping("/gallery/edit")
    public String getImagesToEdit(Model model) {
        model.addAttribute("images", imageService.getAllImages());
        return "editGallery";
    }
}

package tk.trzczy.gallery.domain;

import javax.persistence.*;
import java.util.Date;

@Entity
@Table(name = "images")
public class Image implements BasicImage{
    @Id
    @SequenceGenerator(name = "mySeqGen6", sequenceName = "mySeq6", initialValue = 11, allocationSize = 100)
    @GeneratedValue(generator = "mySeqGen6")

    private Integer id;

    @Column(nullable = false, length = 300)
    private String title;

    @Column(nullable = false)
    private String url;

    @ManyToOne(cascade=CascadeType.PERSIST,fetch=FetchType.EAGER)
    @JoinColumn(name="image_category_id")
    private ImageCategory imageCategory;

    @Column(name="datecreated", columnDefinition="TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
    private Date dateCreated;

    @PrePersist
    protected void onCreate() {
        dateCreated = new Date();
    }

    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getUrl() {
        return url;
    }
    public void setUrl(String url) {
        this.url = url;
    }

    public Date getDateCreated() {
        return dateCreated;
    }

    public void setDateCreated(Date dateCreated) {
        this.dateCreated = dateCreated;
    }


    public Image() {}

    public Image(Integer id, String title, String url, User user) {
        this.id = id;
        this.title = title;
        this.url = url;
    }

    @Override
    public String toString() {
        return "Post{" +
                "id=" + id +
                ", title='" + title + '\'' +
                ", url='" + url + '\'' +
                ", date=" + dateCreated +
                '}';
    }

    public ImageCategory getImageCategory() {
        return imageCategory;
    }

    public void setImageCategory(ImageCategory imageCategory) {
        this.imageCategory = imageCategory;
    }
}

tk/trzcy/gallery/domain/Image.java

package tk.trzczy.gallery.controllers;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;
import tk.trzczy.gallery.domain.Image;
import tk.trzczy.gallery.services.ImageService;
import tk.trzczy.gallery.services.ImageCategoryService;
import tk.trzczy.gallery.services.UserService;
import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.Date;

@Controller
public class ImageController {

    @Autowired
    private ImageService imageService;

    @Autowired
    private UserService userService;

    @Autowired
    private ImageCategoryService imageCategoryService;

    @RequestMapping("/gallery/edit")
    public String getImagesToEdit(Model model) {
        model.addAttribute("images", imageService.getAllImages());
        return "editGallery";
    }
}

package tk.trzczy.gallery.domain;

import javax.persistence.*;
import java.util.Date;

@Entity
@Table(name = "images")
public class Image implements BasicImage{
    @Id
    @SequenceGenerator(name = "mySeqGen6", sequenceName = "mySeq6", initialValue = 11, allocationSize = 100)
    @GeneratedValue(generator = "mySeqGen6")

    private Integer id;

    @Column(nullable = false, length = 300)
    private String title;

    @Column(nullable = false)
    private String url;

    @ManyToOne(cascade=CascadeType.PERSIST,fetch=FetchType.EAGER)
    @JoinColumn(name="image_category_id")
    private ImageCategory imageCategory;

    @Column(name="datecreated", columnDefinition="TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
    private Date dateCreated;

    @PrePersist
    protected void onCreate() {
        dateCreated = new Date();
    }

    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getUrl() {
        return url;
    }
    public void setUrl(String url) {
        this.url = url;
    }

    public Date getDateCreated() {
        return dateCreated;
    }

    public void setDateCreated(Date dateCreated) {
        this.dateCreated = dateCreated;
    }


    public Image() {}

    public Image(Integer id, String title, String url, User user) {
        this.id = id;
        this.title = title;
        this.url = url;
    }

    @Override
    public String toString() {
        return "Post{" +
                "id=" + id +
                ", title='" + title + '\'' +
                ", url='" + url + '\'' +
                ", date=" + dateCreated +
                '}';
    }

    public ImageCategory getImageCategory() {
        return imageCategory;
    }

    public void setImageCategory(ImageCategory imageCategory) {
        this.imageCategory = imageCategory;
    }
}

src/main/webapp/WEB-INF/views/editGalleryPage.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="g" uri="/WEB-INF/date-format-tag.tld" %>

<link rel="stylesheet" href="<spring:url value="/resource/css/editGallery.css" />"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="https://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>


<div class="panel-body">
    <div class="row">
        <ul id="sortable" class="list-unstyled" style="list-style: none;">
            <c:forEach items="${images}" var="image">
                <li class="list-todo">
                    <div class="main-todo-content" id="main-todo-content-${image.id}">
                        <form:form modelAttribute="image" action="/images/edit/${image.id}" id="image" class="image"
                                   method="post">
                            <form:input path="url" id="image-${image.id}" style="width: 525px;"
                                        class=" form:input-large"
                                        name='url' value="${image.url}"/>
                            <input type="submit">
                            <p><form:errors path="url" cssClass="alert alert-danger"/></p>
                        </form:form>

                        <img id="display-${image.id}" class="gallery" src="${image.url}" height="300px"
                             title="${image.title } / <g:dateFromNow date="${image.dateCreated}"></g:dateFromNow>">
                        <p id="image-${image.id}">${image.url}</p>
                    </div>
                </li>
            </c:forEach>
        </ul>
    </div>
</div>





">
${image.url}

pom.xml

<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>tk.trzczy</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>0.0.1</version>
    <packaging>war</packaging>


    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <aspect.version>1.9.2</aspect.version>
        <jackson.version>2.9.8</jackson.version>
        <hibernate.version>5.4.2.Final</hibernate.version>
        <hibernate.validator.version>5.2.1.Final</hibernate.validator.version>
        <c3p0.version>0.9.5.2</c3p0.version>
    </properties>

    <dependencies>

        <!-- servlets and jps -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.tiles</groupId>
            <artifactId>tiles-extras</artifactId>
            <version>3.0.8</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>jcl-over-slf4j</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>jboss</groupId>
                    <artifactId>javassist</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>

        <!--hibernate-->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.javassist</groupId>
                    <artifactId>javassist</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <!-- Hibernate-C3P0 Integration -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>${hibernate.version}</version>
        </dependency>

        <!-- c3p0 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>${c3p0.version}</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>${hibernate.validator.version}</version>
        </dependency>


        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.34</version>
        </dependency>

        <!-- for rest services -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.3</version>
        </dependency>

        <!-- For Aop -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${aspect.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>${aspect.version}</version>
        </dependency>

        <!-- To Send Email -->
        <dependency>
            <groupId>com.sun.mail</groupId>
            <artifactId>javax.mail</artifactId>
            <version>1.5.4</version>
        </dependency>


        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>

        <!--logging-->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.8.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-web -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-web</artifactId>
            <version>2.13.3</version>
        </dependency>


        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.30</version>
        </dependency>

        <!-- PostgreSQL -->
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>42.2.16</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>5.1.3.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-taglibs -->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>5.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.2.7.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-war-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>3.2.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-surefire-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.22.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-rest-core -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-rest-core</artifactId>
            <version>3.3.4.RELEASE</version>
        </dependency>


    </dependencies>

    <build>
        <!-- To define the plugin version in your parent POM -->
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.1</version>
                </plugin>
            </plugins>
        </pluginManagement>
        <plugins>
            <!-- To use the plugin goals in your POM or parent POM -->

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>



            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>


4.0.0
tk.trzczy
SpringWebMVC
0.0.1
战争
UTF-8
1.9.2
2.9.8
5.4.2.最终版本
5.2.1.最终版本
0.9.5.2
javax.servlet
jstl
1.2
javax.servlet
javax.servlet-api
4.0.1
假如
org.apache.tiles
附加瓷砖
3.0.8
org.slf4j
jcl-over-slf4j
jboss
javassist
文件上传
文件上传
1.3.3
org.apache.commons
公地io
1.3.2
org.hibernate
冬眠核心
${hibernate.version}
org.javassist
javassist
org.hibernate
休眠实体管理器
${hibernate.version}
org.hibernate
hibernate-c3p0
${hibernate.version}
com.mchange
c3p0
${c3p0.version}
org.hibernate
休眠验证器
${hibernate.validator.version}
mysql
mysql连接器java
5.1.34
com.fasterxml.jackson.core
杰克逊数据绑定
${jackson.version}
javax.servlet.jsp
javax.servlet.jsp-api
2.3.3
org.aspectj
aspectjrt
${aspect.version}
org.aspectj
aspectjweaver
${aspect.version}
com.sun.mail
javax.mail
1.5.4
org.springframework.security
spring安全内核
5.2.0.1发布
org.springframework
SpringWebMVC
5.2.0.1发布
org.springframework
德克萨斯州春季
5.2.0.1发布
org.springframework
春季甲虫
5.2.0.1发布
org.springframework.security
spring安全网
5.2.0.1发布
org.springframework.security
spring安全配置
5.2.0.1发布
org.apache.logging.log4j
log4j型芯
2.8.2
org.apache.logging.log4j
log4japi
2.8.2
org.apache.logging.log4j
log4jweb
2.13.3
org.slf4j
slf4j简单
1.7.30
org.postgresql
postgresql
42.2.16
org.springframework
spring上下文支持
5.1.3.1发布
org.springframework.security
spring安全标记库
5.1.2.1发布
org.springframework
spring上下文
5.2.7.发布
org.apache.maven.plugins
maven战争插件
3.2.2
org.apache.maven.plugins
maven surefire插件
2.22.1
org.springframework
弹簧网
5.2.0.1发布
org.springframework.data
spring数据rest内核
3.3.4.1发布
org.apache.maven.plugins
maven surefire插件
2.22.1
org.apache.maven.plugins
maven编译器插件
1.8
1.8
org.springframework.boot