{"id":37052,"date":"2023-06-21T22:16:55","date_gmt":"2023-11-18T06:40:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8%e4%bd%bf%e7%94%a8mybatis%e8%bf%9b%e8%a1%8cnull%e5%88%a4%e5%ae%9a%e6%97%b6%ef%bc%8cnull%e5%ba%94%e8%af%a5%e4%bd%bf%e7%94%a8%e5%b0%8f%e5%86%99%e5%ad%97%e6%af%8d%ef%bc%8c%e8%80%8c%e4%b8%8d\/"},"modified":"2024-04-30T10:03:00","modified_gmt":"2024-04-30T02:03:00","slug":"%e5%9c%a8%e4%bd%bf%e7%94%a8mybatis%e8%bf%9b%e8%a1%8cnull%e5%88%a4%e5%ae%9a%e6%97%b6%ef%bc%8cnull%e5%ba%94%e8%af%a5%e4%bd%bf%e7%94%a8%e5%b0%8f%e5%86%99%e5%ad%97%e6%af%8d%ef%bc%8c%e8%80%8c%e4%b8%8d","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8%e4%bd%bf%e7%94%a8mybatis%e8%bf%9b%e8%a1%8cnull%e5%88%a4%e5%ae%9a%e6%97%b6%ef%bc%8cnull%e5%ba%94%e8%af%a5%e4%bd%bf%e7%94%a8%e5%b0%8f%e5%86%99%e5%ad%97%e6%af%8d%ef%bc%8c%e8%80%8c%e4%b8%8d\/","title":{"rendered":"\u5728\u4f7f\u7528Mybatis\u8fdb\u884cNull\u5224\u5b9a\u65f6\uff0cNull\u5e94\u8be5\u4f7f\u7528\u5c0f\u5199\u5b57\u6bcd\uff0c\u800c\u4e0d\u662f\u5927\u5199\u5b57\u6bcd"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u5728\u4f7f\u7528Mybatis\u65f6\uff0c\u5728\u5bf9SQL\u7684WEREE\u6761\u4ef6\u8fdb\u884cNull\u68c0\u67e5\u65f6\uff0c\u9047\u5230\u4e86\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'NULL' not found. Available parameters are [id, param1]\r\n at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:96)\r\n at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:441)\r\n at com.sun.proxy.$Proxy72.selectOne(Unknown Source)\r\n at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)\r\n at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)\r\n at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:145)\r\n at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:86)\r\n at com.sun.proxy.$Proxy86.selectNullError(Unknown Source)\r\n at jp.com.app.mapper.NullErrorMapperTest.Error_Test(NullErrorMapperTest.java:24)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\nCaused by: org.apache.ibatis.binding.BindingException: Parameter 'NULL' not found. Available parameters are [id, param1]\r\n at org.apache.ibatis.binding.MapperMethod$ParamMap.get(MapperMethod.java:212)\r\n at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:120)\r\n at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:3356)\r\n at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:121)\r\n at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)\r\n at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)\r\n at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:51)\r\n at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)\r\n at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)\r\n at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:586)\r\n at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:550)\r\n at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:46)\r\n at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32)\r\n at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:34)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.lambda$apply$0(MixedSqlNode.java:32)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32)\r\n at org.apache.ibatis.scripting.xmltags.TrimSqlNode.apply(TrimSqlNode.java:55)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.lambda$apply$0(MixedSqlNode.java:32)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32)\r\n at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:39)\r\n at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:305)\r\n at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:87)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:151)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:145)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:76)\r\n at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)\r\n ... 72 more\r\n<\/code><\/pre>\n<h1>\u7d50\u679c<\/h1>\n<p>\u548c \u7b49\u6761\u4ef6\u8bed\u53e5\u5e94\u8be5\u4f7f\u7528\u300c\u5c0f\u5199\u300d\u5b57\u6bcd\u6765\u4e66\u5199\uff01<\/p>\n<pre class=\"post-pre\"><code>&lt;if test=\"id != null \"&gt;\r\n    AND id = #{id}\r\n&lt;\/if&gt;\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>&lt;if test=\"id != NULL \"&gt;\r\n    AND id = #{id}\r\n&lt;\/if&gt;\r\n<\/code><\/pre>\n<h1>\u5b9e\u9a8c\uff08\u4ec5\u4f9b\u611f\u5174\u8da3\u7684\u4eba\u53c2\u8003\uff09<\/h1>\n<p>\u5047\u8bbe\u6267\u884c\u4e86\u4ece\u7528\u6237\u4fe1\u606f\u8868\u4e2d\u83b7\u53d6id\u4e3a1\u7684\u7528\u6237\u7684SQL\u67e5\u8be2\u3002<br \/>\n\u5047\u8bbe\u8868\u7ed3\u6784\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code>CREATE TABLE users_infomaion (\r\n  id integer,\r\n  name VARCHAR(255)\r\n);\r\n<\/code><\/pre>\n<p>\u6211\u5c06\u6dfb\u52a0\u4ee5\u4e0b\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code>INSERT INTO users_infomaion VALUES(1,'Tarou');\r\nINSERT INTO users_infomaion VALUES(2,'Jirou');\r\nINSERT INTO users_infomaion VALUES(3,'Saburou');\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u7528\u4e8e\u83b7\u53d6SQL\u7ed3\u679c\u7684Bean\uff08\u5b9e\u4f53\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code>package jp.com.app.entity;\r\n\r\nimport lombok.AllArgsConstructor;\r\nimport lombok.Data;\r\nimport lombok.NoArgsConstructor;\r\n\r\n@Data\r\n@AllArgsConstructor\r\n@NoArgsConstructor\r\npublic class SampleEntity1Response {\r\n    private Integer id;\r\n    private String name;\r\n}\r\n<\/code><\/pre>\n<p>Mapper.java \u4e2d\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\u3002\u5206\u522b\u521b\u5efa\u4e86\u7528\u4e8e\u6b63\u5e38\u7ed3\u675f\u7684 selectRunning \u65b9\u6cd5\u548c\u7528\u4e8e\u5f02\u5e38\u7ed3\u675f\u7684 selectNullError \u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>package jp.com.app.mapper;\r\n\r\nimport org.apache.ibatis.annotations.Mapper;\r\nimport org.apache.ibatis.annotations.Param;\r\n\r\nimport jp.com.app.entity.SampleEntity1Response;\r\n\r\n@Mapper\r\npublic interface NullErrorMapper {\r\n    SampleEntity1Response selectRunning(@Param(\"id\")Integer id);\r\n\r\n    SampleEntity1Response selectNullError(@Param(\"id\")Integer id);\r\n}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;\r\n&lt;!DOCTYPE mapper\r\n        PUBLIC \"-\/\/mybatis.org\/\/DTD Mapper 3.0\/\/EN\"\r\n        \"http:\/\/mybatis.org\/dtd\/mybatis-3-mapper.dtd\"&gt;\r\n&lt;mapper namespace=\"jp.com.app.mapper.NullErrorMapper\"&gt;\r\n    &lt;!-- \u6b63\u5e38\u7d42\u4e86\u7248 --&gt;\r\n    &lt;select id=\"selectRunning\" resultType=\"jp.com.app.entity.SampleEntity1Response\"&gt;\r\n        SELECT\r\n            id,\r\n            name\r\n        FROM\r\n            users_infomaion\r\n        &lt;where&gt; \r\n            &lt;!-- \u203b null\u304c\u5c0f\u6587\u5b57 --&gt;\r\n            &lt;if test=\"id != null \"&gt;\r\n                AND id = #{id}\r\n            &lt;\/if&gt;\r\n        &lt;\/where&gt;\r\n    &lt;\/select&gt;\r\n    &lt;!-- \u7570\u5e38\u7d42\u4e86\u7248 --&gt;\r\n    &lt;select id=\"selectNullError\" resultType=\"jp.com.app.entity.SampleEntity1Response\"&gt;\r\n        SELECT\r\n            id,\r\n            name\r\n        FROM\r\n            users_infomaion\r\n        &lt;where&gt; \r\n            &lt;!-- \u203b NULL\u304c\u5927\u6587\u5b57 --&gt;\r\n            &lt;if test=\"id != NULL \"&gt;\r\n                AND id = #{id}\r\n            &lt;\/if&gt;\r\n        &lt;\/where&gt;\r\n    &lt;\/select&gt;\r\n&lt;\/mapper&gt;\r\n<\/code><\/pre>\n<p>\u6211\u4eec\u5c06\u4f7f\u7528Junit\u6765\u76f4\u63a5\u8c03\u7528Mapper\u5e76\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>package jp.com.app.mapper;\r\n\r\nimport org.junit.jupiter.api.Test;\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.boot.test.context.SpringBootTest;\r\nimport org.springframework.boot.test.context.SpringBootTest.WebEnvironment;\r\n\r\nimport jp.com.app.entity.SampleEntity1Response;\r\n\r\n@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)\r\npublic class NullErrorMapperTest {\r\n    @Autowired\r\n    NullErrorMapper mapper;\r\n    @Test\r\n    public void Runnning_Test()throws Exception{\r\n        Integer id = 1;\r\n        SampleEntity1Response res = mapper.selectRunning(id);\r\n        System.out.println(\"**************************************************************\");\r\n        System.out.println(res);\r\n        System.out.println(\"**************************************************************\");\r\n    }\r\n\r\n    @Test\r\n    public void Error_Test()throws Exception{\r\n        Integer id = 1;\r\n        SampleEntity1Response res = mapper.selectNullError(id);\r\n        System.out.println(\"**************************************************************\");\r\n        System.out.println(res);\r\n        System.out.println(\"**************************************************************\");\r\n    }\r\n}\r\n\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>\u4ee5\u4e0b\u306e\u3088\u3046\u306bResponse\u306e\u5024\u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u8868\u793a\u3055\u308c\u305f\u3089\u6210\u529f\u3067\u3059\u3002\r\n...\u7701\u7565\r\n2022-08-30 15:06:29.502  INFO 25171 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.\r\n**************************************************************\r\nSampleEntity1Response(id=1, name=Tarou)\r\n**************************************************************\r\n2022-08-30 15:06:29.714  INFO 25171 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...\r\n```...\u7701\u7565\r\n<\/code><\/pre>\n<p>\u5982\u679c\u51fa\u73b0\u4ee5\u4e0b\u9519\u8bef\u5c31\u8868\u793a\u5931\u8d25\u3002<br \/>\n\u5982\u679c\u53d1\u751f\u4ee5\u4e0b\u8fd9\u79cd\u9519\u8bef\u5c31\u662f\u5931\u8d25\u3002<\/p>\n<pre class=\"post-pre\"><code>org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'NULL' not found. Available parameters are [id, param1]\r\n at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:96)\r\n at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:441)\r\n at com.sun.proxy.$Proxy72.selectOne(Unknown Source)\r\n at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)\r\n at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)\r\n at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:145)\r\n at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:86)\r\n at com.sun.proxy.$Proxy86.selectNullError(Unknown Source)\r\n at jp.com.app.mapper.NullErrorMapperTest.Error_Test(NullErrorMapperTest.java:26)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\nCaused by: org.apache.ibatis.binding.BindingException: Parameter 'NULL' not found. Available parameters are [id, param1]\r\n at org.apache.ibatis.binding.MapperMethod$ParamMap.get(MapperMethod.java:212)\r\n at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:120)\r\n at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:3356)\r\n at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:121)\r\n at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)\r\n at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)\r\n at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:51)\r\n at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)\r\n at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)\r\n at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:586)\r\n at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:550)\r\n at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:46)\r\n at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32)\r\n at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:34)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.lambda$apply$0(MixedSqlNode.java:32)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32)\r\n at org.apache.ibatis.scripting.xmltags.TrimSqlNode.apply(TrimSqlNode.java:55)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.lambda$apply$0(MixedSqlNode.java:32)\r\n at java.base\/java.util.ArrayList.forEach(ArrayList.java:1541)\r\n at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32)\r\n at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:39)\r\n at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:305)\r\n at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:87)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:151)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:145)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)\r\n at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:76)\r\n at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)\r\n ... 72 more\r\n<\/code><\/pre>\n<h1>\u6700\u540e (zu\u00ec<\/h1>\n<p>Mybatis\u7684Bean(Entity)\u7684\u53d8\u91cf\u540d\u7c7b\u578b\u548c\u5217\u540d\u4e0d\u4e00\u81f4\u65f6\uff0c\u53ef\u80fd\u65e0\u6cd5\u83b7\u53d6\u503c\u7b49\u60c5\u51b5\u53d1\u751f\uff0c\u56e0\u6b64\u5728\u547d\u540d\u65f6\u9700\u8981\u6ce8\u610f\u3002\u987a\u4fbf\u63d0\u4e00\u53e5\uff0c\u6211\u66fe\u7ecf\u56e0\u4e3a\u6df7\u6dc6\u4e86&#8221;resultMap&#8221;\u548c&#8221;resultType&#8221;\u800c\u611f\u5230\u56f0\u6270\u3002\u8bf7\u786e\u4fdd\u4ed4\u7ec6\u68c0\u67e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5728\u4f7f\u7528Mybatis\u65f6\uff0c\u5728\u5bf9SQL\u7684WEREE\u6761\u4ef6\u8fdb\u884cNull\u68c0\u67e5\u65f6\uff0c\u9047\u5230\u4e86\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u9519\u8bef\u3002 org.m [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-37052","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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