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Java处理wangeditor上传图片并升级一下

作者:互联网

wangeditor上传图片

1.在页面上设置富文本编辑器

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="static/js/jquery-3.5.1.js"></script>   <!--jquery拿来备用-->
<script src="static/js/wangEditor.min.js"></script> <!--引入wangEditor的js文件-->
<title>Insert title here</title>
</head>
<body>
	<span>WANGEDITOR富文本编辑器</span>
	<br>
    <div id="myeditor" style="height: 600px;width: 800px">
        <p>默认的值</p>
    </div>
<script>
	const E = window.wangEditor
	const editor = new E('#myeditor')        /*为富文本编辑器绑定显示的div容器*/
	editor.config.uploadImgServer = '${pageContext.request.contextPath}/upload_img.do';
	editor.config.uploadFileName = 'file';
    /*设置编辑器上传文件的请求接口,和参数名称*/
	editor.create()                    //创建wangeditor编辑器
</script>
</body>
</html>

2.wangeditor的上传图片返回格式的要求(官方文档)

接口返回格式,重要

接口要返回 application/json 格式,格式要求如下:

必须返回如下格式,图片才会回显,需要构造一个Vo类

{
    // errno 即错误代码,0 表示没有错误。
    //       如果有错误,errno != 0,可通过下文中的监听函数 fail 拿到该错误码进行自定义处理
    "errno": 0,

    // data 是一个数组,返回图片Object,Object中包含需要包含url、alt和href三个属性,它们分别代表图片地址、图片文字说明和跳转链接,alt和href属性是可选的,可以不设置或设置为空字符串,需要注意的是url是一定要填的。
    "data": [
        {
            url: "图片地址",
            alt: "图片文字说明",
            href: "跳转链接"
        },
        {
            url: "图片地址1",
            alt: "图片文字说明1",
            href: "跳转链接1"
        },
        "……"
    ]
}

wangEditor返回包装类

public class WangEditorVO {
    //错误码
    private Integer errno;
    
    //data数据
    private Object data;

    public Integer getErrno() {
        return errno;
    }
    public Object getData() {
        return data;
    }
    public static WangEditorVO success(Object data) {
        WangEditorVO wangEditorVO = new WangEditorVO();
        wangEditorVO.errno = 0;
        wangEditorVO.data = data;
        return wangEditorVO;
    }
    public static WangEditorVO error(Integer errno, Object data) {
        WangEditorVO wangEditorVO = new WangEditorVO();
        wangEditorVO.errno = errno;
        wangEditorVO.data = data;
        return wangEditorVO;
    }
}

3.编写上传图片接口(使用springMVC)

/**
 * 
 * @ClassName:  TestController   
 * @Description:TODO(描述这个类的作用)   
 * @author: 你的名字
 * @date:   2021年9月16日 上午9:44:26      
 * @Copyright:
 */
@Controller
public class TestController {
	
	/*上传图片接口*/
	@RequestMapping("/upload_img.do")
	@ResponseBody
	public WangEditorVO UploadFileInWangEditor(@RequestParam("file") MultipartFile file) throws IllegalStateException, IOException {           //接收上传的图片
		
		String oldname = file.getOriginalFilename();
         //保存到项目的upload目录下
		file.transferTo(new File("E:\\vc++\\AllAnnoationTest\\WebContent\\upload","fucking"+oldname));
		List<String> list = new ArrayList<String>();
         //因为回显的图片使用src属性,必须使用url形式,不能使用绝对路径
		String resource = "http://localhost:8082/AllAnnoationTest/upload/fucking"+oldname;
         //放入list集合
		list.add(resource);
		return WangEditorVO.success(list); //创建Vo类并传入data属性,然后返回
		
	}
	
}

4.测试,查看网页的控制台

请添加图片描述

5.升级,保存带图片的文章,(全注解JPA)

将内容保存到数据库中去(全注解使用JPA)

编写主配Class,DataSourceConfig

/**
 * 
 * @ClassName:  DataSourceConfig   
 * @Description: 配置数据源  
 * @author: 你的名字
 * @date:   2021年9月17日 下午7:20:16      
 * @Copyright:
 */
@Configuration
@EnableAspectJAutoProxy()             //开启自动代理
@EnableTransactionManagement        //开启注解事务
public class DataSourceConfig {
	
	/*配置C3P0数据源*/
	@Bean
	public DataSource dataSource() throws PropertyVetoException {
         
		ComboPooledDataSource datasource = new ComboPooledDataSource();
		datasource.setJdbcUrl("jdbc:mysql://localhost:3306/jpatest?useSSL=true&useUnicode=true&CharacterEncoding=UTF-8&serverTimeZone=UTC");
		datasource.setDriverClass("com.mysql.cj.jdbc.Driver");
		datasource.setUser("root");
		datasource.setPassword("XXXXXXXXXXXXXXXXX");
		
		return datasource;
	}
	
	/**
	 * 
	 * @Title: entityManagerFactory   
	 * @Description: 配置entityManageFatory(SessionFactory) Session工厂  
	 * @param: @return
	 * @param: @throws PropertyVetoException      
	 * @return: LocalContainerEntityManagerFactoryBean      
	 * @throws
	 */
	@Bean
	public EntityManagerFactory entityManagerFactory() throws PropertyVetoException {
		LocalContainerEntityManagerFactoryBean enFactory =  new LocalContainerEntityManagerFactoryBean();
		
		enFactory.setDataSource(dataSource());
		
        //设置JPA的Hibernate适配器
		HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
		vendorAdapter.setGenerateDdl(true);
		
        //扫描实体类所在的包
		enFactory.setJpaVendorAdapter(vendorAdapter);
		enFactory.setPackagesToScan("com.anno.pojo");
        
        //设置JPA的一些特性信息
		Properties properties = new Properties();
		properties.put("hibernate.show_sql", "true");
		properties.put("hibernate.format_sql", "true");
		properties.put("hibernate.dialect", "org.hibernate.dialect.MySQL8Dialect");
		properties.put("hibernate.hbm2ddl.auto", "update");
		enFactory.setJpaProperties(properties);
		enFactory.afterPropertiesSet();
         //用spring提供的转型转为符合JPA规范的EntityManageFactory接口的方法转型然后返回
		return  enFactory.getObject();
	}
	
	/*配置事务管理器*/
	@Bean
	public PlatformTransactionManager transactionManager() throws PropertyVetoException {
		JpaTransactionManager manager = new JpaTransactionManager();
		manager.setEntityManagerFactory(entityManagerFactory());
         //设置JPA的事务管理器,注入Session工厂,(EntityManageFactory)
		return  manager;
	}

}

(PS.WebMvc的配置)

/**
 * 
 * @ClassName:  WebMvcConfig   
 * @Description:配置SpringMVC
 * @author: 黎翰
 * @date:   2021年9月16日 上午9:29:51      
 * @Copyright:
 */
@Configuration
@ComponentScan("com.anno")
@EnableWebMvc
public class WebMvcConfig   implements WebMvcConfigurer  {


	/***
	 * 通过注解 @Bean 初始化视图解析器
	 * @return ViewResolver 视图解析器
	 */
	@Bean(name="internalResourceViewResolver")
	public ViewResolver initViewResolver() {
		InternalResourceViewResolver viewResolver =new InternalResourceViewResolver();
		viewResolver.setPrefix("");
		viewResolver.setSuffix(".jsp");
		return viewResolver;
	}
	
	/**
	 * 初始化RequestMappingHandlerAdapter,并加载Http的Json转换器
	 * @return  RequestMappingHandlerAdapter 对象
	 */
	@Bean(name="requestMappingHandlerAdapter") 
	public HandlerAdapter initRequestMappingHandlerAdapter() {
		//创建RequestMappingHandlerAdapter适配器
		RequestMappingHandlerAdapter rmhd = new RequestMappingHandlerAdapter();
		// HTTP JSON转换器
		MappingJackson2HttpMessageConverter  jsonConverter 
	        = new MappingJackson2HttpMessageConverter();
		//MappingJackson2HttpMessageConverter接收JSON类型消息的转换
		MediaType mediaType = MediaType.APPLICATION_JSON_UTF8;
		List<MediaType> mediaTypes = new ArrayList<MediaType>();
		mediaTypes.add(mediaType);
		//加入转换器的支持类型
		jsonConverter.setSupportedMediaTypes(mediaTypes);
		//往适配器加入json转换器
		rmhd.getMessageConverters().add(jsonConverter);
		return rmhd;
	}
	
	/**
	 * 
	 * @Title: commonsMultipartResolver   
	 * @Description: 配置上传文件解析器   
	 * @param: @return      
	 * @return: CommonsMultipartResolver      
	 * @throws
	 */
	@Bean
	public CommonsMultipartResolver multipartResolver() {
		CommonsMultipartResolver resolver = new CommonsMultipartResolver();
		resolver.setDefaultEncoding("UTF-8");
		resolver.setMaxInMemorySize(1024*1024*10);
		resolver.setMaxUploadSize(1024*1024*20);
		
		return resolver;
	}

	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/static/**").addResourceLocations("/static/");
		registry.addResourceHandler("/upload/**").addResourceLocations("/upload/");
		WebMvcConfigurer.super.addResourceHandlers(registry);
	}
	
	

}

WebInit配置(代替的Web.xml)

/**
 * 
 * @ClassName:  WebInit   
 * @Description: 代替了Web.xml文件  
 * @author: 黎翰
 * @date:   2021年9月16日 上午9:16:38      
 * @Copyright:
 */
public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer{

	@Override
	protected Class<?>[] getRootConfigClasses() {
		return null;
	}

	@Override
	protected Class<?>[] getServletConfigClasses() {
		return new Class[] {WebMvcConfig.class};
	}

	@Override
	protected String[] getServletMappings() {
		return new String[] {"*.do"};
	}

	@Override
	public void onStartup(ServletContext servletContext) throws ServletException {
		servletContext.addFilter("encodingFilter", MyencodingFilter.class)
        .addMappingForUrlPatterns(null, false, "/*");
		
		
		//必须调用父类的onStarup不然DispatchServlet不会加载
		super.onStartup(servletContext);
	}
	

}

dao层:

/**
 * 
 * @ClassName:  ArticleDaoImpl   
 * @Description:文章Dao的实现类
 * @author: 黎翰
 * @date:   2021年9月17日 下午8:04:11      
 * @Copyright:
 */
@Repository
public class ArticleDaoImpl  implements ArticleDao{
	
	@PersistenceContext
	private EntityManager entityManager;//Session

	@Override
	public void SaveArticle(Article article) {
		entityManager.persist(article);
	}

	@Override
	public Article getArticle(Integer id) {
		return entityManager.find(Article.class, id);
		
	}
	
}

service层:

@Service
public class ArticleService {
	
	@Autowired
	private ArticleDao articleDao;
	
	
	@Transactional
	public void SaveArticle(Article article) {
		articleDao.SaveArticle(article);
	}
	
	public Article getArticle(Integer id) {
		return articleDao.getArticle(id);
	}

}

pojo:

/**
 * 
 * @ClassName:  Article   
 * @Description:保存输入的文章pojo 
 * @author: 黎翰
 * @date:   2021年9月17日 下午7:25:27      
 * @Copyright:
 */
@Entity
@Table(name="t_article")
public class Article {
	
	@Id
	@GeneratedValue(strategy=GenerationType.IDENTITY)
	@Column(name="a_id")
	private Integer id;
	
	@Column(name="a_title")
	private String title;
	
	@Column(name="a_auther")
	private String auther;
	
	@Column(name="a_context",length=500)
	private String context;

	//-------------------省略Getter&Setter方法

}

控制层:

@RequestMapping("/submitArticle.do")
@ResponseBody
public String submitArticle(Article article) {
    //调用业务层保存到数据库里去
    articleService.SaveArticle(article);
    System.out.println("标题为"+article.getTitle());
    System.out.println("作者为"+article.getAuther());
    System.out.println("内容为"+article.getContext());
    return "提交成功";
}

页面:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="static/js/jquery-3.5.1.js"></script>
<script src="static/js/wangEditor.min.js"></script>
<title>Insert title here</title>
</head>
<body>
<span>WANGEDITOR富文本编辑器--------------------------------------------------</span><br>
<span>标题</span><input id="theTitle" type="text" name="title" /><br>
<span>作者</span><input id="theAuther" type="text" name="auther" />
<div id="myeditor" style="height: 600px;width: 800px">
	<p>默认的值</p>
</div>
<script>
	const E = window.wangEditor
	const editor = new E('#myeditor')
	editor.config.uploadImgServer = '${pageContext.request.contextPath}/upload_img.do';
	editor.config.uploadFileName = 'file';
	editor.create();
</script>
<!-- 用一个按钮来提交AJAX,帮个AJAX函数 -->
<input id="sub" type="button" οnclick="AJAXsubmit()" value="提交文章">
<script>
       var AJAXsubmit = function(){
    	  $.ajax({
    		  url:"${pageContext.request.contextPath}/submitArticle.do",
    		  type:"POST",
    		  data:{"title":$('#theTitle').val(),"auther":$('#theAuther').val(),"context":editor.txt.html()},
    		  success:function(result){
    			  alert(result);
    		  }
    	  });
       }
</script>
</body>
</html>

测试:
请添加图片描述
请添加图片描述

6.查看保存的文章,是否能正常显示图片

前提:和Spring和整合Hibernate一样,Spring为Hibernate提供了OpenSessionInViewFilter(懒加载拦截器)

让Hibernate的懒加载机制,能够在视图层才发送sql语句进行查询,

Spring也为JPA提供了类似的懒加载拦截器,可以在spring-orm包的jpa子包中看到
请添加图片描述

现在需要配置上Filter,在WebInit类中注册EntityManageInViewFilter,

@Override
	public void onStartup(ServletContext servletContext) throws ServletException {
        //自定义的字符编码过滤器
		servletContext.addFilter("encodingFilter", MyencodingFilter.class)
        .addMappingForUrlPatterns(null, false, "/*");
         //配置懒加载拦截器
		servletContext.addFilter("openEntityManagerInView", OpenEntityManagerInViewFilter.class)
		.addMappingForUrlPatterns(null, false, "/*");
		
		//必须调用父类的onStarup不然DispatchServlet不会加载
		super.onStartup(servletContext);
	}

现在编写请求,将数据库里的文章显示出来

	@RequestMapping("/testaction.do")
	public String test1(Model model) {
		//调用业务对象,查询t_article的指定id文章
		Article myarticle =  articleService.getArticle(2);
		model.addAttribute("myarticle", myarticle);
		return "success";
	}

在页面里显示一下:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<span>标题:</span>${myarticle.title}<br>
	<span>作者:</span>${myarticle.auther}<br>
	${myarticle.context}
</body>
</html>
```![请添加图片描述](https://www.icode9.com/i/ll/?i=00bba0d67f364f41bdb9278e3ebb10cf.png?,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBA572X6ams6IuP5Li56buY572V6buY5b63,size_20,color_FFFFFF,t_70,g_se,x_16)

标签:return,wangeditor,data,class,new,Java,article,上传,public
来源: https://blog.csdn.net/jamenu/article/details/120358942