error prompt: uncaught exception during scala.MatchError

scalac: Error: false (of class scala.reflect.internal.Trees$Literal)

solution: too many SDKS of Scala are installed, resulting in conflicts and unable to compile normally. Delete the redundant SDKS and keep the locally configured SDKS. File-> Project Structure-> Click the plus sign to add the locally configured SDK, delete other redundant SDKS, and click Apply to finally recompile it.

error: not enough arguments for method addSource: (implicit evidence $9: org.apache.flink.api.com mon. Typeinfo. TypeInformation [String]) org. Apache. Flink. Streaming. API. Scala. DataStream [String].

Unspecified value parameter evidence$9.val stream3 = env.addSource(new FlinkKafkaConsumer011[String](” sensor “, new SimpleStringSchema(), properties))

solution: the SDK was not configured well, so the corresponding jar package was not imported successfully. Just reset the SDK.

ERROR: ERROR ERROR when sending a message to the topic topic_lcc with key: null value: 28 bytes with the ERROR: (org. Apache. Kafka. Clients. Producer. The internals. ErrorLoggingCallback)

org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.

solution: Kafka link timeout can be detected according to the error, because no zookeeper has been started, so start a zookeeper and it will run normally.

Note: the development environment used is IDEA

1. import dependency
   enter relevant dependency information in pom.xml

<!--导入依赖-->
    <dependencies>
        <!--mysql驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!--mybatis-->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>

        <!--junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>

<!--核心配置文件-->
<configuration>

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=true&amp;useUnicode=true&amp;characterEncoding=UTF-8"/>
                <property name="username" value="root"/>
                <property name="password" value="123456"/>
            </dataSource>
        </environment>
    </environments>

    <!--每一个Mapper.xml都需要在Mybatis核心配置文件中注册！-->
    <mappers>
        <mapper resource="com/liu/mapper/UserMapper.xml"/>
    </mappers>

</configuration>

MyBatis tool class
MybatisUtils

package com.liu.utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

/**
 * @author liucong
 * @date 2020/9/8 - 15:08
 */
//sqlSessionFactory --> sqlSession
public class MybatisUtils {

    private static SqlSessionFactory sqlSessionFactory;

    static{
        try {
            //使用Mybatis 第一步：获取sqlSessionFactory
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //既然有了 SqlSessionFactory，顾名思义，我们可以从中获得 SqlSession 的实例。
    // SqlSession 提供了在数据库执行 SQL 命令所需的所有方法。
    public static SqlSession getSqlSession(){
        SqlSession sqlSession = sqlSessionFactory.openSession();
        return sqlSession;
    }
}

1. create entity class

package com.liu.pojo;

/**
 * @author liucong
 * @date 2020/9/8 - 15:24
 */
//实体类
public class User {
    private int id;
    private String name;
    private String pwd;

    public User() {
    }

    public User(int id, String name, String pwd) {
        this.id = id;
        this.name = name;
        this.pwd = pwd;
    }

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

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

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", pwd='" + pwd + '\'' +
                '}';
    }
}

1. write Mapper interface class

package com.liu.mapper;

import com.liu.pojo.User;

import java.util.List;

/**
 * @author liucong
 * @date 2020/9/8 - 15:31
 */
public interface UserMapper {
    //查询全部用户
    List<User> getUserList();

    //根据ID查询用户
    User getUserById(int id);

    //增加一个用户
    int addUser(User user);

    //修改用户
    int updateUser(User user);

    //删除一个用户
    int deleteUser(int id);
}

1. write mapper. XML configuration file

<?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">
<!--namespace:绑定一个对应的Dao/Mapper接口-->
<mapper namespace="com.liu.mapper.UserMapper">
    <select id="getUserList" resultType="com.liu.pojo.User">
        select * from user
    </select>

    <select id="getUserById" parameterType="int" resultType="com.liu.pojo.User">
        select * from mybatis.user where id=#{id}
    </select>

    <insert id="addUser" parameterType="com.liu.pojo.User">
        insert into mybatis.user (id, name, pwd) VALUES (#{id},#{name},#{pwd})
    </insert>

    <update id="updateUser" parameterType="com.liu.pojo.User">
        update mybatis.user set name = #{name},pwd=#{pwd} where id=#{id};
    </update>

    <delete id="deleteUser" parameterType="int">
        delete from mybatis.user where id=#{id}
    </delete>

</mapper>

1. write test class

package com.liu.mapper;

import com.liu.pojo.User;
import com.liu.utils.MybatisUtils;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;

import java.util.List;

/**
 * @author liucong
 * @date 2020/9/8 - 15:54
 */
//org.apache.ibatis.binding.BindingException: Type interface com.liu.mapper.UserMapper is not known to the MapperRegistry.
//java.lang.ExceptionInInitializerError
public class UserMapperTest {
    @Test
    public void test(){
        //第一步：获得SqlSession对象
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        //执行SQL
        //方式一：getMapper
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        List<User> userList = mapper.getUserList();

        //方式二：
//        List<User> userList = sqlSession.selectList("com.liu.mapper.UserMapper.getUserList");

        for(User user:userList){
            System.out.println(user);
        }

        //关闭SqlSession
        sqlSession.close();
    }

    @Test
    public void test2(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();

        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        User user = mapper.getUserById(1);
        System.out.println(user);

        sqlSession.close();
    }

    //增删改需要提交事务
    @Test
    public void test3(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        int res=mapper.addUser(new User(4,"王五","123456"));
        if(res>0){
            System.out.println("插入成功");
        }
        //提交事务
        sqlSession.commit();
        sqlSession.close();
    }

    @Test
    public void test4(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        mapper.updateUser(new User(4,"wangwu","1234"));
        sqlSession.commit();

        sqlSession.close();
    }

    public void test5(){
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        mapper.deleteUser(4);
        sqlSession.commit();
        sqlSession.close();
    }
}

possible problem note: Maven static resource filtering problem

adds

to the pom. XML file

<!--在build中配置resources,来防止我们资源导出失败的问题-->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

Tableau installation error 0x00003, the system can not find the specified path
solution
to the C ProgramData directory, the reason is that the Package Cache directory has become a shortcut, directly delete the Package Cache, install again;

recently needed asm file and bytes file samples for analysis, see the see snow forum can have IDA batch mode! It smells so good!

without further ado code

import sys
import os
import subprocess

global idcScriptFileName
global ida32tFilePath
global ida64tFilePath
#global ida32wFilePath
#global ida64wFilePath

# File these feilds with ur own ida file path and the idc file u want to execute!

idcScriptFileName = "batchmod.idc"
ida32tFilePath ='"D:\IDA 7.0\idat.exe"'
ida64tFilePath = "D:\IDA 7.0\idat64.exe"


#the binary file list text
TargetList = "D:\\batch_disassemble\\target_file_list.txt"
TargetFile_object = open(TargetList,"r").readlines()
for eachline in TargetFile_object:
    eachline = eachline.replace('\n','').replace('\r','')
    print(eachline)
    if os.path.exists(eachline):
        tmpExecStr = ida32tFilePath +" -A -c -S" + idcScriptFileName + " " + eachline
        os.system(tmpExecStr) #single process with cmdwindow
print ("All Process have been started!")

Note:

so if you’re using IDA, let’s look at what’s in your IDA directory. Exe, some of them are idaw on the web, for example, I only have idat.exe.

//by obaby
#include <idc.idc>

static main()
{
	// turn on coagulation of data in the final pass of analysis
	SetShortPrm(INF_AF2, GetShortPrm(INF_AF2) | AF2_DODATA);
	Message("Waiting for the end of the auto analysis...\n");
	Wait();
	Message("\n\n------ Creating the output file.... --------\n");
	auto path = GetIdbPath()[0:-3] + "asm";  //change the data to the length of the file path 
	auto byteFilePath = GetIdbPath()[0:-3] + "bytes";//change the data to the length of the file path 
	auto file = fopen(path,"w");
	auto byteFile = fopen(byteFilePath,"w");
	GenerateFile(OFILE_LST,file,0,-1,0);
	auto addr = MinEA();
	auto i=0;
	for( addr; addr != BADADDR; addr = NextAddr(addr) ){
    		fprintf(byteFile,"%02X",IdbByte(addr));
    		if (i == 15){
        		fprintf(byteFile,"\n");
        		i=0;
    		} else {
        		fprintf(byteFile," ");
        		i++;
    		}
	}
	fclose(file);
	fclose(byteFile);
	Message("All done, exiting...\n");
	Exit(0); // exit to OS, error code 0 - success
}

import os
file_path='D:\\traindata_1\\bancos'
file_list=[i for i in os.listdir(file_path)]
fw=open('target_file_list.txt','a')
for file in file_list:
    fw.write('%s\\%s\n'%(file_path,file))
fw.close()