弹簧启动应用程序显示？？？字符而不是 unicode

Question

从数据库读取时，我的 dao 类中的日志显示垃圾字符而不是 unicode 字符。Sql developer 显示来自 oracle 数据库的正确值，并且在数据库上设置了正确的 NLS 语言编码。

以下代码适用于标准 jdbc：

connection = DriverManager.getConnection(
"jdbc:oracle:thin:@localhost:1521:xe", "adminuser", "oracle");
Statement st=connection.createStatement();
ResultSet res=st.executeQuery("SELECT menu_item_name from pending_menu_item 
where menu_item_id=6062");

    while(res.next()){
        System.out.println("itemName: "+res.getString(1));
    }

下面是显示垃圾字符的 springboot 项目的 url，我上传到 git hub。https://github.com/AyubOpen/spring-boot-jdbc/

package com.mkyong;

import com.mkyong.dao.CustomerRepository;
import com.zaxxer.hikari.HikariDataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.jdbc.core.JdbcTemplate;
import javax.sql.DataSource;
import java.util.List;
import static java.lang.System.exit;

@SpringBootApplication
public class SpringBootConsoleApplication implements CommandLineRunner {

@Autowired
DataSource dataSource;

@Autowired
private CustomerRepository customerRepository;

@Autowired
private JdbcTemplate jdbcTemplate;

  public static void main(String[] args) throws Exception {
      SpringApplication.run(SpringBootConsoleApplication.class, args);
}

@Override
public void run(String... args) throws Exception {

// If you want to check the HikariDataSource settings
 HikariDataSource newds = (HikariDataSource)dataSource;
  System.out.println("getMaximumPoolSize = " + ((HikariDataSource) 
  dataSource).getMaximumPoolSize());
  System.out.println("DATASOURCE = " + 
  newds.getDataSourceProperties().getProperty("hikari.useUnicode"));

  if (args.length <= 0) {
    System.err.println("[Usage] java xxx.jar {display}");
   } else {
        if (args[0].equalsIgnoreCase("display")) {
        System.out.println("Display items...");
        List<String> list = customerRepository.findAll();
        list.forEach(x -> System.out.println(x));
      }
      System.out.println("Done!");
   }
  exit(0);
 }
}

package com.mkyong.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
import java.util.List;

@Repository
public class CustomerRepository {

   @Autowired
   private JdbcTemplate jdbcTemplate;

   public List<String> findAll() {

    List<String> result = jdbcTemplate.query(
        "SELECT menu_item_name from pending_menu_item where 
            menu_item_id=6062",
        (rs, rowNum) -> rs.getString("menu_item_name")
    );
  return result;
  }
}

application.properties  
----------------------
spring.main.banner-mode=off
spring.datasource.initialize=true
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.url=jdbc:oracle:thin:@localhost:1521/xe
spring.datasource.username=jahezdbapp
spring.datasource.password=oracle
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver 
spring.datasource.hikari.useUnicode=true
spring.datasource.hikari.characterEncoding=utf-8 
spring.datasource.hikari.characterSetResults=utf8 

# HikariCP settings
#60 sec
spring.datasource.hikari.connection-timeout=60000
# max 5
spring.datasource.hikari.maximum-pool-size=5

Answer 1

1. ?useUnicode=yes&characterEncoding=UTF-8末尾添加spring.datasource.url。

2. 设置spring.datasource.sqlScriptEncoding=UTF-8在application.properties

1 本身应该可以解决问题，2 可能没有必要。