Connection.prepareStatement()函数出错,提示: Type mismatch: cannot convert from java.sql.PreparedStatement to com.mysql.jdbc.PreparedStatement 这是因为引入的包不对头, import com.mysql.jdbc.PreparedStatement; import com.mysql.jdbc.Statement; 引入正确的包就没有这个错误了. import java…

java.lang.AbstractMethodError: Method com/mysql/jdbc/PreparedStatement.isClosed()Z is abstract -------导包出现重复 删掉3.4.6的…

java.lang.Error: Unresolved compilation problems:   Syntax error on token "return", delete this token  Type mismatch: cannot convert from Init to String Dubbo 在调用服务时候报的错误! 那么问题来了.这什么错? ? 英语不好.     Type mismatch: cannot convert from Init to Strin…

完整的错误信息: Description Resource Path Location TypeType mismatch: cannot convert from Enumeration<String> to Enumeration<Object> ResponseHeaderFilter.java /dwz-java/src/dwz/common/util line 46 Java Problem 解决的方法: watermark/2/text/aHR0cDovL2Jsb2cu…

问题描述: 一个非常简单的spring项目,用静态工厂方法配置bean实例.项目的目录结构如下: 代码如下: Car.java package com.tt.spring.beans.factory; public class Car { private String brand; private double price; public String getBrand() { return brand; } public void setBrand(String brand) { this.b…

今天用到Cookie时,写了一个Cookie数组,发现报错“Type mismatch: cannot convert from javax.servlet.http.Cookie[] to org.apache.tomcat.util.http.parser.Cookie[]”,后来看导入的包,发现按提示直接导入的是“ import org.apache.tomcat.util.http.parser.Cookie ” ,将这个删除,改成 “import javax.servlet.http.…

当数据库字段为blob类型时 ,我们如果使用PreparedStatement中的setBinaryStream(int,InputStream,int)方法需要注意 在向blob字段类型中插入数据时,要使用javaio的inputstream,读入文件. 而相反从blob字段中读出数据时,同样使用javaio的inputstream,再用javaio的outputstream写入文件. 同clob的示例中的问题 如果在设置字节流的地方不加类型转换的话,如下: stat.setBinaryStr…

准备: 数据表 CREATE TABLE `t_user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `username` varchar(10) DEFAULT NULL, `pwd` varchar(10) DEFAULT NULL, `regTime` date DEFAULT NULL, `lastLoginTime` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP, PRIMARY K…

首先放上我的源码,看看你的代码是不是我这个类似的. @Test void predicateTest() throws Exception { List<String> languages = Arrays.asList("Java", "Scala", "C++", "Haskell", "Lisp"); System.out.println("Languages which sta…

源码: FragmentTransaction mFragmentTranscation = getSupportFragmentManager().beginTransaction(); Fragment mMainFragment = new MainFragment();//此行提示出错 mFragmentTranscation.replace(R.id.container, mMainFragment); mFragmentTranscation.commit(); 错误提示:无法将Ma…

问题解释:jdk版本和mysql驱动版本不兼容,比如:jdk1.7与mysql-connector-java-5.xxx兼容,但与mysql-connector-java-6.xxx及以上不兼容…

显示错误:Access denied for user ''@'localhost' (using password: YES) 保证URL中没有空格 尝试用MySQL本地命令行登陆 显示错误:The import com.mysql.jdbc.Connection collides with another import statement 这句话是说com.mysql.jdbc.Connection重复导入 查看该jsp页面是否已导入额com.mysql.jdbc.Connection 显示…

Type mismatch: cannot convert from java.sql.PreparedStatement to com.mysql.jdbc.PreparedStatement import java.sql.PreparedStatement; java连接数据库的问题:Type mismatch: cannot convert from ResultSet to ResultSet 包导入错了,你要导入的是import java.sql.ResultSet;…

项目说明 项目采用 maven 组织 ,jdbc 唯一的依赖就是 mysql-connector-java pom 依赖如下: <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency> </dependencies&g…

import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Savepoint;import java.sql.Statement; import com.mysql.jdbc.Driver; public class Sqltest…

在使用JDBC查询数据库报了这么一个错误 CREATE TABLE `d_user` ( `id` int(10) NOT NULL, `name` varchar(10) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=gb2312; insert into d_user values(1,'sean'); public class Test { public static void main(String[]…

架构使用jsp+servlet+java+mysql mysql里time字段类型为datetime java实体类中该字段类型为Date 页面中,时间字段类型为空的信息显示不出来,且报错信息如下: java.sql.SQLException: Value '0000-00-00 00:00:00' can not be represented as java.sql.Date at com.mysql.jdbc.SQLError.createSQLException(SQLError.java…

写了一批Lua脚本,要放到数据库里面,调用的时候进行计算,由于有太多lua脚本,就写了个程序来录入. 下面主要分三个部分: public static String readToString(String fileName) public static void wirteToMYSQL(String string) throws FileNotFoundException public static List<String> getFileList(String strPath) readT…

报错如下: There was an unexpected error (type=Internal Server Error, status=500). Error attempting to get column 'type' from result set. Cause: java.sql.SQLDataException: Cannot determine value type from string '222-2-21' ; Cannot determine value type fr…

java.sql.SQLException: Parameter index out of range (3 > number of parameters, which is 2). java.sql.SQLException: Parameter index out of range (3 > number of parameters, which is 2). at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056)…

Provides the API for accessing and processing data stored in a data source (usually a relational database) using the Java™ programming language. This API includes a framework whereby different drivers can be installed dynamically to access different…

1.错误描述 org.hibernate.exception.GenericJDBCException: error executing work at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(Sql…

1.错误描述 [ERROR:]2015-06-10 13:48:26,253 [异常拦截] oa.exception.ExceptionHandler org.hibernate.exception.GenericJDBCException: error executing work at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.jav…

1.错误描述 [ERROR:]2015-05-05 16:35:50,664 [异常拦截] org.hibernate.exception.GenericJDBCException: error executing work at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54) at org.hibernate.engine.…

1.错误描述 [ERROR:]2015-05-05 15:48:55,847 [异常拦截] org.hibernate.exception.DataException: error executing work at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:135) at org.hibernate.exception.internal.…

java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957) at com.mysql.jdbc.SQLError.…

问题一: 报错如下: org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.tt.hibernate.n2n.Item at org.hibernate.id.Assigned.generate(Assigned.java:52) at org.hibernate.event.internal.AbstractS…

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.t…

在将kft-activiti-demo的数据库连接改为mysql之后,可以正常登陆,但是在新建请假流程的时候出现如下错误:   Caused by: java.sql.SQLException: Incorrect string value: '\xE5\x85\xAC\xE4\xBC\x91' for column 'leave_type' at row 1 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998) at…

今天在做开关记录的时候,数据库表中description字段用于记录当前版本的描述(需要存储中文),在测试程序的时候发现如果用户输入中文,那么后台会报错.错误信息如下: java.sql.SQLException: Incorrect string value: '\xE8\xAF\xA6\xE6\x83\x85...' for column 'description' at row 1 at com.mysql.jdbc.SQLError.createSQLException(SQLError…