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java.lang.IllegalArgumentException: template not initialized; call afterPropertiesSet() before using it

Cannot invoke "org.springframework.data.redis.core.StringRedisTemplate.opsForValue()" because "org.example.security.SecurityApplication.template" is null

org.example.security.SecurityApplicationTests#contextLoads

单元测试代码

@SpringBootTest
class SecurityApplicationTests {@Testvoid contextLoads() {
//        String compact = Jwts.builder()
//                .signWith(Jwts.SIG.HS512.key().build())
//                .subject("严欣铷")
//                .expiration(new Date(System.currentTimeMillis() + 7200 * 1000))
//                .compact();
//        System.out.println(compact);RedisTemplate redisTemplate = new RedisTemplate();redisTemplate.afterPropertiesSet();StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();stringRedisTemplate.opsForValue().set("yanxinru","token");System.out.println("添加成功" + stringRedisTemplate);}}

错误代码如上

正确代码

@SpringBootTest
class SecurityApplicationTests {@AutowiredStringRedisTemplate template;  //添加这句代码，自动装载，即可解决文章三处代码报错@Testvoid contextLoads() {
//        String compact = Jwts.builder()
//                .signWith(Jwts.SIG.HS512.key().build())
//                .subject("严欣铷")
//                .expiration(new Date(System.currentTimeMillis() + 7200 * 1000))
//                .compact();
//        System.out.println(compact);template.opsForValue().set("name","yanxinru");System.out.println("添加成功" + template);}}