Question

我正在使用netbeans IDE开发JAVA Web项目，我希望在项目目录之外的文件夹中显示一些图像，在我的servlet上传之后，这是我的代码：

的web.xml：

   func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.


        UIApplication.sharedApplication().statusBarStyle = .LightContent
        UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!]
        UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)]


        return true
    }

img in jsp：

<?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">
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>views/index.jsp</welcome-file>
    </welcome-file-list>

    <servlet>
        <servlet-name>login</servlet-name>
        <servlet-class>controllers.LoginController</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>login</servlet-name>
        <url-pattern>/login</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>index</servlet-name>
        <jsp-file>/views/index.jsp</jsp-file>
    </servlet>

    <servlet-mapping>
        <servlet-name>index</servlet-name>
        <url-pattern>/index</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>students</servlet-name>
        <servlet-class>controllers.StudentController</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>students</servlet-name>
        <url-pattern>/students</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>books</servlet-name>
        <servlet-class>controllers.BookController</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>books</servlet-name>
        <url-pattern>/books</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>admins</servlet-name>
        <servlet-class>controllers.AdminController</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>admins</servlet-name>
        <url-pattern>/admins</url-pattern>
    </servlet-mapping>

    <context-param>
            <param-name>uploads</param-name>
            <param-value>C:/Users/mohammad/Documents/NetBeansProjects/uploads</param-value>
    </context-param>

</web-app>

的servlet：

我将它发送到json对象中：

<img src="C:/Users/mohammad/Documents/NetBeansProjects/uploads/name.jpg"/>

我确信该图片存在于该文件夹中，但无法加载，这里有什么问题？

Answer 1

你应该在web.XML图像扩展文件上添加过滤器，它实际上指定了哪种外部资源可以通过前端控制器传递。请你发布你的web.xml

您可以尝试此链接Upload an image to a Path set in web.xml using primefaces

servlets：从项目目录外显示图像

1 个答案: