讓Hibernate顯示SQL語句的綁定參數(shù)值
使用Hibernate提供的內(nèi)置屬性<Property name="show_sql">true</Property>只能輸出類似于下面的SQL語句:
- Hibernate:
- insert into student(name, sex, age, cardId, classroom_id, id) values (?, ?, ?, ?, ?, ?)
這樣不利于程序的調(diào)試,為了可以顯示?占位符所代表的具體數(shù)據(jù),需要第三方Jar包,p6spy是一個(gè)該需求的開源實(shí)現(xiàn)。
一、在Java Project項(xiàng)目中使用p6spy:
- 到其官方網(wǎng)站下載其Jar包,http://www.p6spy.com/(貌似不能訪問了)靠Google或Baidu搜索一下吧。
- 一般Download下來的是zip或jar文件包,將其解壓縮,將里面的p6spy.jar放入構(gòu)建路徑里,將spy.properties文件放入src目 錄下。
- 修改兩個(gè)屬性,第一個(gè),realdriver=你使用具體數(shù)據(jù)庫(kù)的驅(qū)動(dòng)類(例如MySQL為:com.mysql.jdbc.Driver);第二個(gè),logfile=指定log文件的位置(例如,c:/spy.log)。
- 修改Hibernate.cfg.xml配置文件中的 <property name="hibernate.connection.driver_class">com.p6spy.engine.spy.P6SpyDriver</property>
配置完畢后,執(zhí)行HQL語句后,查看spy.log文件就可以看到?占位符的具體數(shù)據(jù)了:(前面部分是Hibernate的初始化信息,最下面顯示的就是完整的SQL語句)
- 1326730516837|-1||debug||com.p6spy.engine.common.P6SpyOptions reloading properties
- 1326730516842|-1||info||Using properties file: D:\WorkSpace\MyEclipse\9\hibernate\list mapping\bin\spy.properties
- 1326730516842|-1||info||No value in environment for: getStackTrace, using: false
- 1326730516842|-1||info||No value in environment for: getAppender, using: com.p6spy.engine.logging.appender.FileLogger
- 1326730516842|-1||info||No value in environment for: getDeregisterDrivers, using: false
- 1326730516842|-1||info||No value in environment for: getUsePrefix, using: false
- 1326730516842|-1||info||No value in environment for: getExecutionThreshold, using: 0
- 1326730516842|-1||info||No value in environment for: getAutoflush, using: true
- 1326730516842|-1||info||No value in environment for: getExclude, using:
- 1326730516842|-1||info||No value in environment for: getExcludecategories, using: info,debug,result,batch
- 1326730516843|-1||info||No value in environment for: getFilter, using: false
- 1326730516843|-1||info||No value in environment for: getInclude, using:
- 1326730516843|-1||info||No value in environment for: getIncludecategories, using:
- 1326730516843|-1||info||No value in environment for: getLogfile, using: spy.log
- 1326730516843|-1||info||No value in environment for: getRealdriver, using: com.mysql.jdbc.Driver
- 1326730516843|-1||info||No value in environment for: getRealdriver2, using:
- 1326730516843|-1||info||No value in environment for: getRealdriver3, using:
- 1326730516843|-1||info||No value in environment for: getAppend, using: true
- 1326730516843|-1||info||No value in environment for: getSpydriver, using: com.p6spy.engine.spy.P6SpyDriver
- 1326730516843|-1||info||No value in environment for: getDateformat, using:
- 1326730516843|-1||info||No value in environment for: getDateformatter, using: null
- 1326730516843|-1||info||No value in environment for: getStringmatcher, using: com.p6spy.engine.common.SubstringMatcher
- 1326730516843|-1||info||No value in environment for: getStringMatcherEngine, using: com.p6spy.engine.common.SubstringMatcher@60e128
- 1326730516843|-1||info||No value in environment for: getStackTraceClass, using:
- 1326730516843|-1||info||No value in environment for: getSQLExpression, using: null
- 1326730516843|-1||info||No value in environment for: getReloadProperties, using: false
- 1326730516843|-1||info||No value in environment for: getReloadPropertiesInterval, using: 60
- 1326730516843|-1||info||No value in environment for: getJNDIContextFactory, using: null
- 1326730516843|-1||info||No value in environment for: getJNDIContextProviderURL, using: null
- 1326730516844|-1||info||No value in environment for: getJNDIContextCustom, using: null
- 1326730516844|-1||info||No value in environment for: getRealDataSource, using: null
- 1326730516844|-1||info||No value in environment for: getRealDataSourceClass, using: null
- 1326730516844|-1||info||No value in environment for: getRealDataSourceProperties, using: null
- 1326730517419|7|0|statement|select max(id) from classroom|select max(id) from classroom
- 1326730517440|0|0|statement|select max(id) from student|select max(id) from student
- 1326730517454|0|0|statement|insert into classroom (grade, number, id) values (?, ?, ?)|insert into classroom (grade, number, id) values ('fourth grade', 1, 1)
- 1326730517456|1|0|statement|insert into student (name, sex, age, cardId, classroom_id, id) values (?, ?, ?, ?, ?, ?)|insert into student (name, sex, age, cardId, classroom_id, id) values ('lisi', 'true', 21, '08053120', 1, 2)
- 1326730517457|0|0|statement|update student set classroom_id=?, index_=? where id=?|update student set classroom_id=1, index_=1 where id=2
- 1326730517458|0|0|commit||
二、在Java Web項(xiàng)目中使用p6spy(Tomcat環(huán)境下)
- 將p6spy.jar 放入應(yīng)用程序的WEB-INF/lib目錄,將spy.properties放入WEB-INF/classes目錄
- 其他與Java Project項(xiàng)目使用方法一樣。
- 重啟Tomcat服務(wù)器
可能會(huì)出現(xiàn)的問題:驅(qū)動(dòng)程序加載先后的問題解決
如果spy.log里出現(xiàn)你的程序的數(shù)據(jù)庫(kù)驅(qū)動(dòng)名稱 is a real driver in spy.properties, but it has been loaded before p6spy. p6spy will not wrap these connections. Either prevent the driver from loading, or try setting 'deregisterdrivers' to true in spy.properties.
請(qǐng)把spy.properties文件里的deregisterdrivers=false改為deregisterdrivers=true,重新運(yùn)行即可。
原文鏈接:讓Hibernate顯示SQL語句的綁定參數(shù)值
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