SpringBoot17 FastJson配置、Druid配置

1 FastJson配置

　　1.1 FastJson基础知识

　　1.2 SpringBoot整合FastJson

　　　　1.2.1 导入FastJson依赖

        <!--fastjson-->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.2.46</version>

        </dependency>

　　　　1.2.2 配置FastJson

　　　　　　技巧01：配置类必须位于启动方法同一级别或者下面的级别

　　　　　　技巧02：WebMvcConfigurerAdapter已经过时

　　　　　　　　参考文档：点击前往

package cn.test.demo.base_demo.config;

import com.alibaba.fastjson.serializer.SerializerFeature;

import com.alibaba.fastjson.support.config.FastJsonConfig;

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

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 org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.util.ArrayList;

import java.util.List;

/**

 * @author 王杨帅

 * @create 2018-05-09 14:33

 * @desc FastJson配置

 **/

@Configuration

public class FastJsonConfiguration extends WebMvcConfigurationSupport {

    @Override

    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {

        // 01 调用父类的配置

        super.configureMessageConverters(converters);

        // 02 实例化FastJson转换器

        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();

        // 03 数据类型配置

        List<MediaType> supportedMediaTypes = new ArrayList<>();

        supportedMediaTypes.add(MediaType.APPLICATION_JSON);

        supportedMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);

        supportedMediaTypes.add(MediaType.APPLICATION_ATOM_XML);

        supportedMediaTypes.add(MediaType.APPLICATION_FORM_URLENCODED);

        supportedMediaTypes.add(MediaType.APPLICATION_OCTET_STREAM);

        supportedMediaTypes.add(MediaType.APPLICATION_PDF);

        supportedMediaTypes.add(MediaType.APPLICATION_RSS_XML);

        supportedMediaTypes.add(MediaType.APPLICATION_XHTML_XML);

        supportedMediaTypes.add(MediaType.APPLICATION_XML);

        supportedMediaTypes.add(MediaType.IMAGE_GIF);

        supportedMediaTypes.add(MediaType.IMAGE_JPEG);

        supportedMediaTypes.add(MediaType.IMAGE_PNG);

        supportedMediaTypes.add(MediaType.TEXT_EVENT_STREAM);

        supportedMediaTypes.add(MediaType.TEXT_HTML);

        supportedMediaTypes.add(MediaType.TEXT_MARKDOWN);

        supportedMediaTypes.add(MediaType.TEXT_PLAIN);

        supportedMediaTypes.add(MediaType.TEXT_XML);

        fastJsonHttpMessageConverter.setSupportedMediaTypes(supportedMediaTypes);

        // 04 创建FastJson配置类

        FastJsonConfig fastJsonConfig = new FastJsonConfig();

        fastJsonConfig.setSerializerFeatures( // 修改FastJson过滤配置

                SerializerFeature.DisableCircularReferenceDetect,

                SerializerFeature.WriteMapNullValue,

                SerializerFeature.WriteNullStringAsEmpty

        );

        // 05 为FastJson转换器设置FastJson配置类

        fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);

        // 06 将FastJson转换器添加到视图消息转换器列表中

        converters.add(fastJsonHttpMessageConverter);

    }

}

FastJsonConfiguration.java

　　1.3 坑01

　　　　1.3.1 错误信息

　　　　　　Spring Boot配置FastJson报错'Content-Type' cannot contain wildcard type '*'

　　　　1.3.2 解决办法

　　　　　　点击前往

2 Druid配置

　　2.1 导入druid依赖

        <!--druid数据库连接池-->

        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>druid</artifactId>

            <version>1.0.29</version>

        </dependency>

　　2.2 数据源配置

spring:

  datasource:

    url: jdbc:mysql://127.0.0.1:3306/testdemo?useUnicode=true&characterEncoding=UTF-8&&useSSL=false

    driver-class-name: com.mysql.jdbc.Driver

    username: root

    password: root

    type: com.alibaba.druid.pool.DruidDataSource

    #最大活跃数

    maxActive: 20

    #初始化数量

    initialSize: 1

    #最大连接等待超时时间

    maxWait: 60000

    #打开PSCache，并且指定每个连接PSCache的大小

    poolPreparedStatements: true

    maxPoolPreparedStatementPerConnectionSize: 20

    #通过connectionProperties属性来打开mergeSql功能；慢SQL记录

    #connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

    minIdle: 1

    timeBetweenEvictionRunsMillis: 60000

    minEvictableIdleTimeMillis: 300000

    validationQuery: select 1 from dual

    testWhileIdle: true

    testOnBorrow: false

    testOnReturn: false

    #配置监控统计拦截的filters，去掉后监控界面sql将无法统计,'wall'用于防火墙

    filters: stat, wall, log4j

  jpa:

    properties:

      hibernate:

        show_sql: true

        format_sql: true

　　2.3 Druid配置类

package cn.test.demo.base_demo.config;

import com.alibaba.druid.support.http.StatViewServlet;

import com.alibaba.druid.support.http.WebStatFilter;

import org.springframework.boot.web.servlet.FilterRegistrationBean;

import org.springframework.boot.web.servlet.ServletRegistrationBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

/**

 * @author 王杨帅

 * @create 2018-05-09 11:31

 * @desc 数据库监控配置

 **/

@Configuration

public class DruidConfigruration {

    @Bean

    public ServletRegistrationBean statViewServlet(){

        //创建servlet注册实体

        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");

        //设置ip白名单

        servletRegistrationBean.addInitParameter("allow","127.0.0.1");

        //设置ip黑名单，如果allow与deny共同存在时,deny优先于allow

        servletRegistrationBean.addInitParameter("deny","192.168.0.19");

        //设置控制台管理用户

        servletRegistrationBean.addInitParameter("loginUsername","druid");

        servletRegistrationBean.addInitParameter("loginPassword","123456");

        //是否可以重置数据

        servletRegistrationBean.addInitParameter("resetEnable","false");

        return servletRegistrationBean;

    }

    @Bean

    public FilterRegistrationBean statFilter(){

        //创建过滤器

        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

        //设置过滤器过滤路径

        filterRegistrationBean.addUrlPatterns("/*");

        //忽略过滤的形式

        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");

        return filterRegistrationBean;

    }

}

DruidConfigruration.java

　　2.4 参考博文