構(gòu)建一個(gè)spring boot項(xiàng)目。
添加攔截器需要添加一個(gè)configuration
|
1
2
3
|
@Configuration@ComponentScan(basePackageClasses = Application.class, useDefaultFilters = true)public class ServletContextConfig extends WebMvcConfigurationSupport { |
為了方便掃描位置，我們可以寫一個(gè)接口或者入口類Application放置于最外一層的包內(nèi)，這樣就會(huì)掃描該類以及子包的類。
1 resources配置
在沒有配置這個(gè)類的時(shí)候，我們可以在application.ym中修改靜態(tài)文件位置和匹配方式：
|
1
2
3
4
5
6
7
|
#指定環(huán)境配置文件spring: profiles: active: dev # 修改默認(rèn)靜態(tài)路徑，默認(rèn)為/**，當(dāng)配置hello.config.ServletContextConfig后此處配置失效 mvc: static-path-pattern: /static/** |
但當(dāng)我們繼承了WebMvcConfigurationSupport 并配置掃描后，上述resources的配置失效，還原默認(rèn)配置。那么我們需要在這個(gè)類中再次指定靜態(tài)資源位置：
|
1
2
3
4
5
|
@Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/").addResourceLocations("/**"); registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); } |
這樣訪問classpath下的static包下的靜態(tài)資源的url匹配為/static/xxx.js。默認(rèn)匹配static下的靜態(tài)文件url為/xxx.js，雖然清潔，但我感覺idea不會(huì)識(shí)別這種路徑，還是改成完整的路徑比較好。
2.Interceptor配置
配置登錄攔截或者別的。需要?jiǎng)?chuàng)建一個(gè)攔截器類來繼承HandlerInterceptorAdapter,然后只需要覆蓋你想要攔截的位置就可以了。比如，我只是攔截訪問方法之前：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
package hello.interceptor;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Created by miaorf on 2016/8/3. */public class LoginInterceptor extends HandlerInterceptorAdapter { private Logger logger = LoggerFactory.getLogger(LoginInterceptor.class); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String authorization = request.getHeader("Authorization"); logger.info("The authorization is: {}",authorization); return super.preHandle(request, response, handler); }} |
寫好interceptor之后需要在開始創(chuàng)建的ServletContextConfig中添加這個(gè)攔截器：
|
1
2
3
4
5
6
7
|
@Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new LoginInterceptor()) .addPathPatterns("/**") .excludePathPatterns(FAVICON_URL) ; } |
完整的ServletContextConfig為：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
package hello.config;import hello.Application;import hello.interceptor.LoginInterceptor;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;/** * */@Configuration@ComponentScan(basePackageClasses = Application.class, useDefaultFilters = true)public class ServletContextConfig extends WebMvcConfigurationSupport { static final private String FAVICON_URL = "/favicon.ico"; static final private String PROPERTY_APP_ENV = "application.environment"; static final private String PROPERTY_DEFAULT_ENV = "dev"; /** * 發(fā)現(xiàn)如果繼承了WebMvcConfigurationSupport，則在yml中配置的相關(guān)內(nèi)容會(huì)失效。 * @param registry */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/").addResourceLocations("/**"); registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); } /** * 配置servlet處理 */ @Override public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { configurer.enable(); } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new LoginInterceptor()) .addPathPatterns("/**") .excludePathPatterns(FAVICON_URL) ; }} |
github地址：https://github.com/chenxing12/spring-boot-demo
本demo源碼：spring-boot-demo.rar
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：http://www.cnblogs.com/woshimrf/p/5734956.html
