SpringBoot请求参数过滤空格

喜欢ヅ旅行 2023-08-17 16:46 122阅读 0赞

## 前言 ##

#### [博主github][github] ####

#### [博主个人博客http://blog.healerjean.com][http_blog.healerjean.com] ####

### 1、参数修改SpaceHttpServletRequestWrapper ###

public class SpaceHttpServletRequestWrapper extends HttpServletRequestWrapper { 
    
        public SpaceHttpServletRequestWrapper(HttpServletRequest servletRequest) { 
            super(servletRequest);
        }
    
        @Override
        public String[] getParameterValues(String parameter) { 
            String[] values = super.getParameterValues(parameter);
            if (values == null) { 
                return new String[0];
            }
            int count = values.length;
            String[] encodedValues = new String[count];
            for (int i = 0; i < count; i++) { 
                encodedValues[i] = values[i].trim();
            }
            return encodedValues;
        }
    
        @Override
        public String getParameter(String parameter) { 
            String value = super.getParameter(parameter);
            if (value == null) { 
                return null;
            }
            return value.trim();
        }
    }

### 2、空格过滤器 ###

public class SpaceFilter implements Filter { 
    
        private FilterConfig filterConfig;
    
        @Override
        public void init(FilterConfig filterConfig) throws ServletException { 
            this.filterConfig = filterConfig;
        }
    
        @Override
        public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws
                IOException, ServletException { 
            filterChain.doFilter(new SpaceHttpServletRequestWrapper(
                    (HttpServletRequest) servletRequest), servletResponse);
        }
    
        @Override
        public void destroy() { 
            this.filterConfig = null;
        }
    }

### 3、过滤器初始化 ###

@Configuration
    public class WebMvcConfiguration implements WebMvcConfigurer { 
    
        @Bean
        public FilterRegistrationBean spaceFilter() { 
            FilterRegistrationBean fitler = new FilterRegistrationBean();
            fitler.setFilter(new SpaceFilter());
            fitler.addUrlPatterns("/*");
            fitler.setName("SpaceFilter");
            fitler.setDispatcherTypes(DispatcherType.REQUEST);
            return fitler;
        }
    }

![ContactAuthor][]

[github]: https://github.com/HealerJean
[http_blog.healerjean.com]: http://HealerJean.github.io
[ContactAuthor]: /images/20230809/5f16481f4c014471bae794e2727e5b16.png