Question

我知道这是一个重复的问题。对不起要问。我在spring mvc应用程序中遇到此错误。这是我的Impl文件

public Map<String, String> employeelist() {
    Map<String, String> map = new HashMap<String, String>();
    List<Employee> lang1 = namedParameterJdbcTemplate.query("select * from 
     employee", new EmployeeMapper());
    for (int i = 0; i < lang1.size(); i++) {
        map.put(lang1.get(i).getLocalename(), lang1.get(i).getName());
    }
    return map;
}

 public static final class EmployeeMapper implements RowMapper<Employee> {

    public Employee mapRow(ResultSet rs, int rowNum) throws SQLException {
        Map<String, String> map = new HashMap<String, String>();
        Employee employee = new Employee();
        employee.setId(rs.getString("id"));
        employee.setName(rs.getString("name"));
        employee.setSalary(rs.getString("salary"));
        employee.setDesignation(rs.getString("designation"));
        employee.setLocalename(rs.getString("localename"));
        return employee;
    }

}

尝试执行此操作时，我收到类似"Caused by: java.sql.SQLException: Column 'localename' not found"的错误消息。所有其他字段都正常工作。但对于 localename ，只显示错误。这里有什么问题？？请帮帮我..

抱歉我的英语不好

这是我的员工类

package com.bct.internal.form.model;

public class Employee {
private String id;
private String name;
private String salary;
private String designation;
private String localename;

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getSalary() {
    return salary;
}

public void setSalary(String salary) {
    this.salary = salary;
}

public String getDesignation() {
    return designation;
}

public void setDesignation(String designation) {
    this.designation = designation;
}


public String getLocalename() {
    return localename;
}

public void setLocalename(String localename) {
    this.localename = localename;
}

@Override
public String toString() {
    return "Employee [ID=" + id + ", NAME=" + name + ", SALARY=" + salary + 
", LOCALE_NAME=" + localename + ", DESIGNATION=" + designation + "]";
}
}

Answer 1

请检查

SELECT * FROM Employee

或

DESC Employee

列名localename在表中是否存在。另请检查localename。

的数据类型

Answer 2

您应该连接到您的数据库并执行（确保使用正确的架构）：

webview.evaluateJavascript(
                        "(function() { return ('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>'); })();",
                        new ValueCallback<String>() {
                            @Override
                            public void onReceiveValue(String html) {
                            }
                        });

您需要100％确定列的名称＆＃39; localename＆＃39;返回表上的描述完全匹配，它不应该有下划线或连字符。这可能只是你创建的桌子上的拼写错误。

Answer 3

如果表中没有列名localename，则添加列localname，然后在hbm文件中检查列localname是否已映射（如果使用hibernate）。

引起：java.sql.SQLException：未找到列'localename'

3 个答案: