<select id="getToBePaidByDataStatus" parameterType="String" resultMap="DigitalBaohanResult"> select count(*) from DIGITAL_BAOHAN where DATA_STATUS = #{dataStatus} </select> 报错 java.lang.IllegalStateException: Ambiguous handler methods mapped for '/digitalBaohan/getToBePaidByDataStatus': {public com.ruoyi.common.core.web.domain.AjaxResult com.baohan.controller.DigitalBaohanController.getToBePaidByDataStatus(java.lang.Long), public com.ruoyi.common.core.web.domain.AjaxResult com.baohan.controller.DigitalBaohanController.getInfo(java.lang.Long)} at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:432) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:383) at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.getHandlerInternal(RequestMappingInfoHandlerMapping.java:125) at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.getHandlerInternal(RequestMappingInfoHandlerMapping.java:67) at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:498) at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1264) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1046) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)

JAVA中报错

MyBatis学习-映射文件标签篇(select、resultMap).rar_alikeett_blueaod_mybatis

<select id="selectUser" resultMap="userResultMap"> SELECT * FROM user </select> 这将返回一个User对象列表，每个User对象包含了完整的属性值，包括其关联的Address对象。通过深入理解并熟练运用select...

mybatis动态sql（使用<where>标签来处理多个查询条件）

MyBatis提供了多种动态SQL标签，如<if>、<choose>、<when>、<otherwise>、<trim>、<where>、<set>和<foreach>等，这些标签可以用来构建灵活多变的SQL语句。 #### 三、<where>标签详解 <where>...

<select id="selectFundSettlementList" parameterType="FundSettlementEntity" resultMap="FundSettlementResult"> select * from t_fund_settlement <where> <if test="orderType != null and orderType != ''"> <if test="orderType=='other'"> and order_type not in ("issue_ticket","return_ticket","rebook_ticket") </if> <if test="orderType=='issue_ticket' or orderType=='return_ticket' or orderType=='rebook_ticket'"> and order_type = #{orderType} </if> </if> </where> order by bill_date_time desc </select>

在<where>标签中，它首先检查订单类型是否不为空且不为空字符串。如果满足这个条件，它会根据订单类型的取值生成不同的查询条件。如果订单类型是"other"，则添加一个条件：订单类型不是"issue_ticket"、"return_...

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.iotek.ssm.dao.ApplyDao"> <select id="queryAllApply" resultType="Apply"> select * from apply </select> <select id="queryApplyByUname" parameterType="String" resultType="Apply"> select * from apply where uname=#{uname} </select> <insert id="insertApply" parameterType="Apply"> insert into apply(uname,deliveryTime,checkStatus,interviewStatus,interviewTime,hiring,did) values(#{uname},#{deliveryTime},#{checkStatus},#{interviewStatus},#{interviewTime},#{hiring},#{did}) </insert> <delete id="deleteApply" parameterType="int"> delete from apply where aid=#{aid} </delete> <update id="updateApply" parameterType="Apply"> update apply set checkStatus=#{checkStatus},interviewStatus=#{interviewStatus}, interviewTime=#{interviewTime},hiring=#{hiring} where aid=#{aid} </update> <select id="queryApplyByAid" parameterType="int" resultType="Apply"> select * from apply where aid=#{aid} </select> <select id="queryApplyByUnameAndInterviewStatus" parameterType="String" resultType="Apply"> select * from apply where uname=#{uname} and interviewStatus="按时面试" </select> <select id="queryApplyByDidAndInterviewStatus" resultType="Apply"> select * from apply where did=#{did} and interviewStatus="确认面试" </select> </mapper>这段代码是干嘛的

这段代码是 MyBatis 的 Mapper 文件，用于定义数据库操作的 SQL 语句。该 Mapper 定义了一些 SQL 语句，包括查询所有申请、按用户名查询申请、...这些 SQL 语句可以通过 MyBatis 框架调用执行，从而对数据库进行操作。

<select id="getNoFinishByMajor" parameterType="String" resultMap="APointPleaseForgein"> SELECT ID, <include refid="column"/> FROM a_point_please_forgein where major_name = #{majorName} <![CDATA[ AND state < 6 AND state <> 4 ]]> order by createtime desc </select>

这是一段 MyBatis 框架中的 SQL 语句，用于查询 a_...其中，<include refid="column"/> 部分引用了另一个 resultMap（APointPleaseForgein），用于动态生成查询的列。最终结果按照创建时间（createtime）降序排序。

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.qs.birp.jgAudit.JgAuditHeadDao"> <select id="getReqByReqNo" resultType="jg_audit_head" parameterType="String"> select * from jg_audit_head where request_no = #{request_no} limit 1; </select> <select id="showJgAuditHead" resultType="jg_audit_head"> SELECT * FROM jg_audit_head <where> and is_show = "1" <if test='request_no !=null and request_no !=""'>and request_no =#{request_no} </if> <if test='purchase_no !=null and purchase_no !=""'>and purchase_no =#{purchase_no} </if> <if test='project_number !=null and project_number !=""'>and project_number =#{project_number} </if> <if test='project_name !=null and project_name !=""'> and project_name like "%"#{project_name}"%"</if> <if test='company_code !=null and company_code !=""'>and company_code =#{company_code} </if> <if test='sssdwdm !=null and sssdwdm !=""'>and sssdwdm =#{sssdwdm}</if> <if test='ssxdwdm !=null and ssxdwdm !=""'>and ssxdwdm =#{ssxdwdm}</if> <if test='status !=null and status !=""'>and status =#{status}</if> <if test='company_code_values!=null and company_code_values.size()>0'> and company_code in <foreach collection="company_code_values" item="item" open="(" separator="," close=")"> #{item} </foreach> </if> </where> limit #{currIndex}, #{pageSize} ; </select> <select id="showJgAuditHeadCount" resultType="Integer"> SELECT count(*) FROM jg_audit_head <where> and is_show = "1" <if test='request_no !=null and request_no !=""'>and request_no =#{request_no} </if> <if test='purchase_no !=null and purchase_no !=""'>and purchase_no =#{purchase_no} </if> <if test='project_number !=null and project_number !=""'>and project_number =#{project_number} </if> <if test='project_name !=null and project_name !=""'> and project_name like "%"#{project_name}"%"</if> <if test='company_code !=null and company_code !=""'>and company_code =#{company_code} </if> <if test='sssdwdm !=null and sssdwdm !=""'>and sssdwdm =#{sssdwdm}</if> <if test='ssxdwdm !=null and ssxdwdm !=""'>and ssxdwdm =#{ssxdwdm}</if> <if test='status !=null and status !=""'>and status =#{status}</if> <if test='company_code_values!=null and company_code_values.size()>0'> and company_code in <foreach collection="company_code_values" item="item" open="(" separator="," close=")"> #{item} </foreach> </if> </where> </select> </mapper> 请你帮我分析什么原因导致服务起不来

<think>好的，我现在要帮用户分析为什么这个MyBatis的Mapper文件会导致服务起不来。首先，我需要仔细看看用户提供的XML代码，找出可能的问题点。首先，检查XML的声明和DOCTYPE是否正确。用户提供的代码中，XML版本...

<select id="selectTblZdWcsbByWcsbdm" parameterType="String" resultMap="TblZdWcsbResult"> <include refid="selectTblZdWcsbVo"/> where ssqsbm = #{qsbm} </select>

这是一个 MyBatis 的 XML 映射文件中的一个 SQL 查询语句，用于查询名为 TblZdWcsb 的数据表中符合条件 ssqsbm = #{qsbm} 的记录。其中，#{qsbm} 是一个动态参数，可以在调用该 SQL 语句时传入实际的值。...

<select id="selectProject" parameterType="project" resultMap="BaseResultMap"> select * from project <where> <if test="pName != null and pName != ''"> and p_name like concat('%', #{pName}, '%')</if> <if test="pManager != null and pManager != ''"> and p_manager = #{pManager}</if> <if test="pPeople != null and pPeople != ''"> and p_people = #{pPeople}</if> <if test="pImg != null and pImg != ''"> and p_img = #{pImg}</if> <if test="pDescribe != null and pDescribe != ''"> and p_describe = #{pDescribe}</if> <if test="pTasks != null "> and p_tasks = #{pTasks}</if> <if test="pTasksplan != null "> and p_tasksplan = #{pTasksplan}</if> <if test="pTasksre != null">and p_tasksre = #{pTasksre}</if> <if test="pPlanprogress != null "> and p_planprogress = #{pPlanprogress}</if> <if test="pProgress != null "> and p_progress = #{pProgress}</if> <if test="pStatus != null "> and p_status = #{pStatus}</if> </where> </select>

但是，我注意到您在查询语句中使用了 parameterType="project"，这意味着您的查询方法应该接受一个 Project 对象作为参数。由于您的查询结果为 null，有可能是传递给查询方法的 Project 对象中的属性值不正确导致...

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="org.mybatis.example.BlogMapper"> <select id="selectStudentById" resultType="Student"> select * from s_student where id = #{id} </select> <select id="selectStudentByCId" resultType="Student"> select * from s_student where cid = #{cid} </select> <insert id="insertStudent" parameterType="Student" > insert into s_student(name,age,cid) values(#{name},#{age},#{cid}) </insert> <select id="selectStudentsByClassName" resultType="Student"> SELECT s.* FROM s_student s JOIN s_class c ON s.cid = c.id WHERE c.name = #{className} </select> <update id="updateStudent" parameterType="Student"> UPDATE s_student SET name = #{name}, age = #{age} WHERE id = #{id} </update> <delete id="deleteStudentById" parameterType="int"> DELETE FROM s_student WHERE id = #{id} </delete> </mapper>

resultType 属性指定了查询结果的返回类型，parameterType 属性指定了 SQL 语句的参数类型。具体来说，这个映射文件中包含了通过学生 id 和班级 id 查询学生信息、插入学生信息、通过班级名称查询学生信息、修改学生...

解释一下这段代码：<?xml version = "1.0" encoding = "UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD com.example.Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.example.demo.mapper.UserMapper"> <resultMap id="result" type="com.example.demo.entity.User"> <result property="userId" column="userId" /> <result property="userDate" column="userDate" /> <result property="userName" column="userName" /> <result property="userAddress" column="userAddress"/> </resultMap> <select id="ListUser" resultMap="result"> SELECT * FROM user </select> <select id="findUserByName" resultMap="result" parameterType="String"> SELECT * FROM user where userName like concat(concat('%',#{userName}),'%') order by userId desc </select> <select id="queryPage" resultMap="result" parameterType="Integer"> select * from user order by userId desc limit #{startRows},5 </select> <select id="getRowCount" resultType="Integer"> select count(*) from user </select> <insert id="insertUser" parameterType="com.example.demo.entity.User"> INSERT INTO user ( userId,userDate,userName,userAddress ) VALUES ( #{userId}, #{userDate, jdbcType=VARCHAR}, #{userName, jdbcType=VARCHAR}, #{userAddress, jdbcType=VARCHAR} ) </insert> <delete id="delete" parameterType="int"> delete from user where userId=#{userId} </delete> <update id="Update" parameterType="com.example.demo.entity.User"> update user set user.userDate=#{userDate},user.userName=#{userName},user.userAddress=# {userAddress} where user.userId=#{userId} </update> </mapper>

- <select>：定义了一个查询语句，用于从数据库中获取数据。其中id为"ListUser"，resultMap为"result"，表示将查询结果映射到上面定义的resultMap中。 - <insert>：定义了一个插入语句，用于向数据库中插入数据。...

下面代码中的user是什么？在IDEA环境下，如何创造这样一个“user”？代码：<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.example.demo.mapper.UserMapper"> <resultMap id="userMap" type="com.example.demo.entity.User"> <id column="id" property="id"/> <result column="name" property="name"/> <result column="age" property="age"/> <result column="gender" property="gender"/> </resultMap> <select id="selectById" resultMap="userMap"> select * from user where id = #{id} </select> <select id="selectAll" resultMap="userMap"> select * from user </select> <insert id="insert" parameterType="com.example.demo.entity.User"> insert into user(name, age, gender) values(#{name}, #{age}, #{gender}) </insert> <update id="update" parameterType="com.example.demo.entity.User"> update user set name = #{name}, age = #{age}, gender = #{gender} where id = #{id} </update> <delete id="deleteById"> delete from user where id = #{id} </delete></mapper>

在这个XML文件中，"user"是一个数据库表的实体类，包含了id、name、age、gender等字段。这里的"user"并不是IDEA环境下创建的对象，而是代表了数据库表的实体类，需要在Java代码中创建对应的实体类。在IDEA环境下...

<select id="queryBlogIF" parameterType="map" resultType="Blog" resultMap="blog"> select * from mybatis.blog where 1=1 <if test="title!=null"> and title=#{title} </if> <if test="author!=null"> and author =#{author} </if> </select> 这段代码什么意思

- <select> 标签定义了一个查询语句，id 属性指定了查询语句的唯一标识。 - parameterType 属性指定了传入查询语句的参数类型，这里是一个 Map 类型。 - resultType 属性指定了查询结果的返回类型，这里...

<select id="selectMemberByClassIdAndMemberAccount" parameterType="java.lang.Integer" resultType="classOrder"> SELECT * FROM class_order WHERE class_id = #{classId} AND member_account = #{memberAccount} </select>

这也是一个SQL查询语句，用于查询数据库中的class_order表中，class_id和member_account与传入参数相匹配的数据，并返回resultType为classOrder的结果。其中，classId和memberAccount是参数，通过#{paramName}形式...

全面解释<select id="findById" resultType="SysUser" parameterType="long"> select * from sys_user where user_id = #{id} </select>

- select * from sys_user where user_id = #{id}：表示具体的 SQL 查询语句。其中 #{id} 是 MyBatis 的占位符语法，用于接收参数。当我们调用这个查询语句的时候，比如 session.selectOne("findById", 1L)...

<select id="findById" resultType="SysUser" parameterType="long"> select * from sys_user where user_id = #{id} </select>啥意思

这是一个 MyBatis 的 Mapper 映射文件中的一个查询语句，它的作用是根据 id 查询 sys_user 表中的一条记录，并将结果映射为 SysUser 类型的对象。其中，#{id} 是一个占位符，表示查询语句的参数，类型为 ...

这是vue中的前端代码axios({ method: 'get', url: '/BookShopSystem_war/getQueryBook/' + bookName <select id="getQueryBook" parameterType="String" resultMap="bookResult"> select * from book where book_name like CONCAT('%',#{bookName},'%') </select> 传递的bookName是String但最后会乱码导致查询不到书籍，如何解决

我们可以使用JavaScript的encodeURIComponent()函数来对参数进行编码，以确保它们被正确地传输。在你的代码中，将/BookShopSystem_war/getQueryBook/' + bookName替换为/BookShopSystem_war/getQueryBook/' + ...

29.存在如下配置: <select id="sqiLog" parameterType="appLog"resultType="appLog"> select*from t_applog where <if test="title!=null"> title=#{title}</if>

"sqiLog"的配置是一个Mybatis的<select>标签，在其中定义了一个名为"sqiLog"的SQL查询语句，使用了一个名为"appLog"的参数类型，并且指定了返回结果的类型也是"appLog"。在SQL查询语句中使用了一个<if>标签，用于...

<select id="getQueryBook" parameterType="String" resultMap="bookResult"> select * from book where book_name = #{bookName} </select>改为模糊查询

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<select id="getQueryBook" parameterType="String" resultMap="bookResult"> select * from book where book_name = #{bookName} </select>改为模糊查询

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JAVA中报错

MyBatis学习-映射文件标签篇(select、resultMap).rar_alikeett_blueaod_mybatis

mybatis动态sql（使用<where>标签来处理多个查询条件）

<select id="getNoFinishByMajor" parameterType="String" resultMap="APointPleaseForgein"> SELECT ID, <include refid="column"/> FROM a_point_please_forgein where major_name = #{majorName} <![CDATA[ AND state < 6 AND state <> 4 ]]> order by createtime desc </select>

<select id="selectTblZdWcsbByWcsbdm" parameterType="String" resultMap="TblZdWcsbResult"> <include refid="selectTblZdWcsbVo"/> where ssqsbm = #{qsbm} </select>

<select id="queryBlogIF" parameterType="map" resultType="Blog" resultMap="blog"> select * from mybatis.blog where 1=1 <if test="title!=null"> and title=#{title} </if> <if test="author!=null"> and author =#{author} </if> </select> 这段代码什么意思

<select id="selectMemberByClassIdAndMemberAccount" parameterType="java.lang.Integer" resultType="classOrder"> SELECT * FROM class_order WHERE class_id = #{classId} AND member_account = #{memberAccount} </select>

全面解释<select id="findById" resultType="SysUser" parameterType="long"> select * from sys_user where user_id = #{id} </select>

<select id="findById" resultType="SysUser" parameterType="long"> select * from sys_user where user_id = #{id} </select>啥意思

29.存在如下配置: <select id="sqiLog" parameterType="appLog"resultType="appLog"> select*from t_applog where <if test="title!=null"> title=#{title}</if>

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