When referring to a static resource files in the project or be ajax requests we sometimes use $ {basePath}, in fact, this is the way to obtain an absolute path:
Then springboot how to configure the project to use basePaht it?
The first step: custom interceptor (achieve HandlerInterceptor)
Code:
package com.slm.tools.project.config;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author: create by slm
* @version: v1.0
* @description: com.slm.tools.project.config
* @date:2019/4/9
*/
public class PathInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
String path = httpServletRequest.getContextPath();
String scheme = httpServletRequest.getScheme();
String serverName = httpServletRequest.getServerName();
int port = httpServletRequest.getServerPort();
String basePath = scheme + "://" + serverName + ":" + port + path;
httpServletRequest.setAttribute("basePath", basePath);
return true;
}
@Override
public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
}
}
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Step: Step registered custom interceptor device
Code:
package com.slm.tools.project.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
/ **
* @author: the Create by SLM
* @version: v1.0
* @description: com.slm.tools.project.config
* @date: 2019/4/9
* /
@Configuration
public class PathInterceptorConfig the extends WebMvcConfigurerAdapter {
@ override
public void addInterceptors (InterceptorRegistry Registry) {
registry.addInterceptor (new new PathInterceptor ()) addPathPatterns ( "/ **");.
}
}
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to this configuration even finished, then use it to test the front end
Step Three: Testing
I tested here using ajax:
function encrypt() {
var txt =$("#txt").val();
$.ajax({
url:"${basePath}/md5/encrypt",
dataType:"json",
data:{
txt:txt
},
success:function (data) {
$("#16MD5").html(data.MD516);
$("#16MD5Upper").html(data.MD516Upper);
$("#32MD5").html(data.MD532);
$("#32MD5Upper").html(data.MD532Upper);
}
}
)
}
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打开页面按F12键观察：
We can see that we have to get the absolute path by $ {basePaht}.
End