Springboot转换器参数去空格 使用Springboot自定义转换器实现参数去空格功能
CherishLy0 人气:0想了解使用Springboot自定义转换器实现参数去空格功能的相关内容吗,CherishLy0在本文为您仔细讲解Springboot转换器参数去空格的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Springboot参数,自定义转换器,参数去空格,下面大家一起来学习吧。
自定义转换器实现参数去空格
1.自定义转换器类
实现Converter<S, T>类,重写convert()方法,直接上代码。
/** * 自定义转换器 * 去掉前后空格 * @author liuy * @version 2018年11月13日 */ public class CustomConverter implements Converter<String, String>{ @Override public String convert(String source) { try { if(source != null){ source = source.trim(); if(!"".equals(source)){ return source; } } } catch (Exception e) { e.printStackTrace(); } return null; } }
2.将转换器交给spring容器处理
@Configuration public class SpringdataConvert { @Autowired private RequestMappingHandlerAdapter requestMappingHandlerAdapter; @PostConstruct public void addConversionConfig(){ ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) requestMappingHandlerAdapter.getWebBindingInitializer(); if(initializer.getConversionService()!=null){ GenericConversionService genericConversionService =(GenericConversionService) initializer.getConversionService(); genericConversionService.addConverter(new CustomConverter()); } } }
SpringBoot请求参数过滤空格
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; } }
以上为个人经验,希望能给大家一个参考,也希望大家多多支持。
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