springboot全局字符編碼設置

1、在application.properties中設置

#編碼格式
spring.http.encoding.force=true
spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true
server.tomcat.uri-encoding=UTF-8

2、自己手寫編碼過濾器

//字符編碼過濾器
@WebFilter(urlPatterns = "/*",filterName = "CharacterEncodingFilter")
public class CharacterEncodingFilter implements Filter{
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
 
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
 
        filterChain.doFilter(request , response);
    }
    @Override
    public void destroy() {
    }
}

3、使用java配置寫一個字符編碼配置類

/**
 * 中文亂碼解決
 */
@Configuration
public class CharsetConfig extends WebMvcConfigurerAdapter {
    @Bean
    public HttpMessageConverter<String> responseBodyConverter() {
        StringHttpMessageConverter converter = new StringHttpMessageConverter(
                Charset.forName("UTF-8"));
        return converter;
    }
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        super.configureMessageConverters(converters);
        converters.add(responseBodyConverter());
    }
    @Override
    public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
        configurer.favorPathExtension(false);
    }
}

　　StringHttpMessageConverter是一個請求和響應信息的編碼轉換器，通過源碼我們發現默認編碼ISO-8859-1，不是UTF-8，所以我們只要通過上述配置將請求字符串轉為UTF-8 即可。

WebMvcConfigurerAdapter 是springmvc的一個配置支配器類，我們可以實現我們感興趣的方法。