Welcome file not working with html file in spring

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I have given my welcome file in web.xml But when running the application, it is showing 404 error on http://172.16.2.16:8080/sampletest/

It is a spring

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6条回答

情深已故

2020-12-19 10:10
Welcome file can be access using following changes.

change 1. add resource path in dispatcher as following :
```
      <mvc:resources mapping="/" location="/index.html" />
```
change 2. add controller handler like following :
```
     @Controller
      public class RestController {

     @RequestMapping(value = "/", method = RequestMethod.GET)
      public String welcome() {
            return "index.html";
      }

     }
```
changes 3: index.html file should be in WebContent folder in project.

Note : If you are not able to add mvc bean in dispatcher servlet file then add
```
  xmlns:mvc="http://www.springframework.org/schema/mvc
```
in dispatcher servlet config file.
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失恋的感觉

2020-12-19 10:23
You have mapped all your incoming requests to the dispatcher here,
```
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
```
So all your URL requests for the application goes inside the dispatcher as '/' maps all incoming requests . check for the stacktraces in your application server log

update:

You get the below warning because there are no handler for the '/' pattern,

WARNING: No mapping found for HTTP request with URI [/AccelFlow/] in DispatcherServlet with name 'dispatcher'

You can do either of below options ,
1. Map a url with '/' to the controller
2. Add a specific URL pattern to the spring dispatcher such as .htm or .do as you wish
Modify your web.xml,
```
<servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>  
```
And in your controller,
```
@RequestMapping(value = "/test.htm", method = RequestMethod.GET)
public @ResponseBody Response display() throws Exception {
    accelFlowFacade.disaply();
    Response res = new Response();
    return res;
}
```
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忘掉有多难

2020-12-19 10:23

At the startup by default all incoming requests are mapping to '/' pattern as you write in the web.xml:

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

update:

Try to map a Controller method for the default view:

@RequestMapping(value = "/", method = GET)
public String welcome() {
    return "index";
}

Add viewresolver to dispather-servlet.xml:

<bean id="viewResolver"
      class="org.springframework.web.servlet.view.InternalResourceViewResolver"
      p:prefix="/"
      p:suffix=".jsp" />

Remove welcome file from the web.xml as automatically spring will search for index page by default:
```
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
```

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灰色年华

2020-12-19 10:26
using <mvc:resources mapping="/" location="/index.html" /> is goods for static pages , however changing it to

@RequestMapping(value = "/", method = RequestMethod.GET) public String welcome() { return "index.html"; }

is not good design as all model in other controllers may point back to index page, instead use
```
<mvc:resources mapping="/" location="/redfresh.html"  />
```
and make refresh page such
```
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <meta http-equiv="refresh" content="0;URL='/index'" />
</head>
<body>
</body>
</html>
```
and point in controller to index such:
```
@Controller
public class indexPageController {

 @RequestMapping(value = "/index", method = RequestMethod.GET, produces = "text/html")
    public String index() {       
        return "index";
    }
}
```
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遥遥无期

2020-12-19 10:28

Just add your index.html to webContent folder. Because welcome file is searched in that folder itself.

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长发绾君心

2020-12-19 10:34

Try adding <mvc:default-servlet-handler/> in your dispatcher-servlet.xml.

See here for details.

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