springmvc+swagger2整合

整合的过程中遇到了一些问题，特此记录。

问题一：springmvc中使用fastJsonHttpMessageConverter导致swagger2 解析json失败若果换成mappingJackson2HttpMessageConverter就没事儿了，但是感觉fastjson性能更好一些，所以就得硬着头皮解决swagger2与fastjson兼容的问题。网上有很多解决方案，无非就是说换最高版本的fastjson就好了，但是我换了最新版的fastjson还是不行，不知道为什么，所以只能按照网上说的方法，来喽，大概意思就是自定义一个fastjson转换器。上代码

FastJsonHttpMessageConverterEx

package core.swagger;

import springfox.documentation.spring.web.json.Json;

import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;

public class FastJsonHttpMessageConverterEx extends FastJsonHttpMessageConverter {

    public FastJsonHttpMessageConverterEx() {
        super();
        this.getFastJsonConfig().getSerializeConfig().put(Json.class, SwaggerJsonSerializer.instance);
    }

}

SwaggerJsonSerializer

package core.swagger;

import java.io.IOException;
import java.lang.reflect.Type;

import springfox.documentation.spring.web.json.Json;

import com.alibaba.fastjson.parser.DefaultJSONParser;
import com.alibaba.fastjson.parser.deserializer.ObjectDeserializer;
import com.alibaba.fastjson.serializer.JSONSerializer;
import com.alibaba.fastjson.serializer.ObjectSerializer;
import com.alibaba.fastjson.serializer.SerializeWriter;

public class SwaggerJsonSerializer implements ObjectSerializer, ObjectDeserializer {

    public final static SwaggerJsonSerializer instance = new SwaggerJsonSerializer();

    @Override
    public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
        SerializeWriter out = serializer.getWriter();
        Json json = (Json) object;
        out.write(json.value());
    }

    @Override
    public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
        return null;
    }

    @Override
    public int getFastMatchToken() {
        return 0;
    }

}

springmvc配置文件

<mvc:annotation-driven>
		<mvc:message-converters register-defaults="true">
			<bean id="fastJsonHttpMessageConverter" class="core.swagger.FastJsonHttpMessageConverterEx">
				<property name="supportedMediaTypes">
					<list>
						<value>text/plain;charset=UTF-8</value>
						<value>text/html;charset=UTF-8</value>
						<value>application/json;charset=UTF-8</value>
					</list>
				</property>
				<property name="features">
					<array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
						<value>DisableCircularReferenceDetect</value>
						<value>WriteMapNullValue</value>
						<value>WriteNullNumberAsZero</value>
						<value>WriteNullStringAsEmpty</value>
						<value>WriteNullListAsEmpty</value>
						<value>WriteNullBooleanAsFalse</value>
					</array>
				</property>
			</bean>
		</mvc:message-converters>
	</mvc:annotation-driven>

成功解决问题

问题二：用springmvc写了一个登录拦截器，swagger2的所有请求都拦截了，由于swagger2是引入的jar包，所以跟了下代码，配置了一下拦截器

<mvc:interceptors>
		<mvc:interceptor>
			<mvc:mapping path="/**" />
			<mvc:exclude-mapping path="/webjars/**" />
			<mvc:exclude-mapping path="/swagger-resources/**" />
			<mvc:exclude-mapping path="/v2/**" />
			<bean class="interceptor.UserSecurityInterceptor">
				<property name="excludedUrls">
					<list>
						<value>/tbuser/noUser</value>
						<value>/tbuser/login</value>
						<value>/swagger-ui.html</value>
					</list>
				</property>
			</bean>
		</mvc:interceptor>
	</mvc:interceptors>

成功解决问题