通过网上教程使用springboot整合fastJson后遇到页面重定向问题(使用的springboot版本是2.0.2.RELEASE ，其他的版本可能不会出现以下问题)，如下图：
我的项目结构如下
自定义的fastJson消息转换器配置类(WebMvcConfigurerAdapter这个类好像在springboot2.0以及spring5.0的版本后被废弃了所以通过继承WebMvcConfigurationSupport来实现configureMessageConverters方法的重写)，代码如下：
package com.boot.interceptor; import java.util.ArrayList;
import java.util.List; import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter; @Configuration
public class FastJsonConfiguration extends WebMvcConfigurationSupport{
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
super.configureMessageConverters(converters);
// 创建FastJson消息转换器
FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
// 创建配置类
FastJsonConfig fastJsonConfig = new FastJsonConfig();
// 修改配置返回内容的过滤
fastJsonConfig.setSerializerFeatures(
SerializerFeature.PrettyFormat
); List<MediaType> fastMediaType = new ArrayList<>();
fastMediaType.add(MediaType.APPLICATION_JSON_UTF8);
fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaType);
fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
// 将FastJson添加到视图消息转换器列表内
converters.add(fastJsonHttpMessageConverter);
} }
在mvc.properties中配置了spring.mvc.view.prefix和spring.mvc.view.suffix，配置如下
controller包中TestController测试类代码如下
package com.boot.interceptor.controller; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; @Controller
public class TestController { @RequestMapping("/test")
public String test() throws {
return "index";
} }
index.jsp页面
将FastJsonConfiguration这个类注释掉后就可以正常返回，效果如下：
解决方案：
添加配置类生成UrlBasedViewResolver配置的Bean(@ConfigurationProperties注解的location属性好像在springboot1.5后已经没有了，所以通过@PropertySource可引入自定义配置文件)，代码如下：
package com.boot.interceptor; import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.web.servlet.view.JstlView;
import org.springframework.web.servlet.view.UrlBasedViewResolver; @Configuration
@ConfigurationProperties(prefix="spring.mvc.view")
@PropertySource("classpath:mvc.properties")
public class DefaultConfiguration { private String prefix;
private String suffix; public String getPrefix() {
return prefix;
} public void setPrefix(String prefix) {
this.prefix = prefix;
} public String getSuffix() {
return suffix;
} public void setSuffix(String suffix) {
this.suffix = suffix;
} @Bean
public UrlBasedViewResolver setupViewResolver() {
UrlBasedViewResolver resolver = new UrlBasedViewResolver();
resolver.setPrefix(prefix);
resolver.setSuffix(suffix);
resolver.setCache(true);
resolver.setViewClass(JstlView.class);
return resolver;
}
}
问题是解决了，但是具体的原理问题我还没弄清楚，也希望园内的大佬指点下！