druid是阿里巴巴開源平臺上一個數據庫連接池實現，它結合了c3p0、dbcp、proxool等db池的優點，同時加入了日志監控，可以很好的監控db池連接和sql的執行情況，可以說是針對監控而生的db連接池(據說是目前最好的連接池)
一、依賴
為了測試，使用jdbctemplate
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<!-- jdbctemplate --><dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-jdbc</artifactid></dependency><!-- druid數據庫連接池 --><dependency> <groupid>com.alibaba</groupid> <artifactid>druid</artifactid> <version>1.0.26</version></dependency><!-- mysql connector --><dependency> <groupid>mysql</groupid> <artifactid>mysql-connector-java</artifactid> <scope>runtime</scope></dependency> |
二、druid配置
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druid.properties#數據庫設置spring.datasource.driverclassname=com.mysql.jdbc.driverspring.datasource.url=jdbc:mysql://localhost:3306/uu_core?useunicode=true&characterencoding=utf8&autoreconnect=true&usessl=truespring.datasource.username=rootspring.datasource.password=root#--------------------------# 下面為連接池的補充設置，應用到上面所有數據源中# 初始化大小，最小，最大spring.datasource.initialsize=5spring.datasource.minidle=1spring.datasource.maxactive=50# 配置獲取連接等待超時的時間spring.datasource.maxwait=60000# 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒spring.datasource.timebetweenevictionrunsmillis=60000# 配置一個連接在池中最小生存的時間，單位是毫秒spring.datasource.minevictableidletimemillis=300000spring.datasource.validationquery=select 1 from dualspring.datasource.testwhileidle=truespring.datasource.testonborrow=falsespring.datasource.testonreturn=false# 打開pscache，并且指定每個連接上pscache的大小spring.datasource.poolpreparedstatements=false#spring.datasource.maxpoolpreparedstatementperconnectionsize=20# 配置監控統計攔截的filters，去掉后監控界面sql無法統計，'wall'用于防火墻spring.datasource.filters=stat,wall,log4j# 通過connectproperties屬性來打開mergesql功能；慢sql記錄spring.datasource.connectionproperties=druid.stat.mergesql=true;druid.stat.slowsqlmillis=5000# 合并多個druiddatasource的監控數據#spring.datasource.useglobaldatasourcestat=true |
三、實例化druid datasource
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package cn.aduu.config;import com.alibaba.druid.pool.druiddatasource;import com.alibaba.druid.support.http.statviewservlet;import com.alibaba.druid.support.http.webstatfilter;import org.springframework.boot.context.properties.configurationproperties;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;import org.springframework.context.annotation.propertysource;import javax.sql.datasource;/** * @author zh * @classname cn.aduu.config.druidconfiguration * @description */@configuration@propertysource(value = "classpath:druid.properties")public class druidconfiguration { @bean(destroymethod = "close", initmethod = "init") @configurationproperties(prefix = "spring.datasource") public datasource druiddatasource() { druiddatasource druiddatasource = new druiddatasource(); return druiddatasource; } /** * 注冊一個statviewservlet * @return */ @bean public servletregistrationbean druidstatviewservlet(){ //org.springframework.boot.context.embedded.servletregistrationbean提供類的進行注冊. servletregistrationbean servletregistrationbean = new servletregistrationbean(new statviewservlet(),"/druid/*"); //添加初始化參數：initparams //白名單： servletregistrationbean.addinitparameter("allow","127.0.0.1"); //ip黑名單 (存在共同時，deny優先于allow) : 如果滿足deny的話提示:sorry, you are not permitted to view this page. servletregistrationbean.addinitparameter("deny","192.168.1.73"); //登錄查看信息的賬號密碼. servletregistrationbean.addinitparameter("loginusername","admin"); servletregistrationbean.addinitparameter("loginpassword","123456"); //是否能夠重置數據. servletregistrationbean.addinitparameter("resetenable","false"); return servletregistrationbean; } /** * 注冊一個：filterregistrationbean * @return */ @bean public filterregistrationbean druidstatfilter(){ filterregistrationbean filterregistrationbean = new filterregistrationbean(new webstatfilter()); //添加過濾規則. filterregistrationbean.addurlpatterns("/*"); //添加不需要忽略的格式信息. filterregistrationbean.addinitparameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"); return filterregistrationbean; }} |
四、監控
訪問 http://localhost:8080/druid， 使用上面配置的賬號密碼。
五、測試
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@restcontrollerpublic class hellocontroller{ private static final logger logger = loggerfactory.getlogger(hellocontroller.class); @autowired private jdbctemplate jdbctemplate; @requestmapping("hello") public list<map<string, object>> hello() { list<map<string, object>> list = jdbctemplate.queryforlist("select user,password from mysql.user ", new object[]{}); return list; }} |
訪問 localhost:8080/hello
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[ { "user": "root", "password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b" }, { "user": "root", "password": "*81f5e21e35407d884a6cd4a731aebfb6af209e1b" }] |
總結
以上所述是小編給大家介紹的springboot使用druid數據源，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對服務器之家網站的支持！
原文鏈接：https://blog.csdn.net/qq_36640744/article/details/80096475
