Question

我一直在获取输出，但它是两倍的数量。例如，如果所需的输出是SUGAR，则相似。程序将显示

SUGAR
SUGAR

无论如何我能解决这个问题吗？我实际上是使用嵌套的for循环遍历一个对象数组。下面是嵌套for循环的代码

for(var i=0; i<ingredientList.length; i++){

     for(var j=0; j<this.objUser.length; j++){

          len = this.objUser.length;

        userAllergyDetails.push(this.objUser[j].userAllergies);

       for(var k=0; k<len; k++){  //matching starts

         if(ingredientList[i] == this.objUser[j].userAllergies.toUpperCase()){

           console.log('match');
           unSafeResult.push(ingredientList[i]);
           console.log(unSafeResult);
         }

       }


     }

   }
    console.log(userAllergyDetails);
   console.log(userAllergyDetails.length);
   console.log(this.objUser);

  }

上述代码的输出是

ingredient list (26) ["INGREDIENTS↵WHEAT FLOUR", "SUGAR", "CHOCOLATE LIQUOR", "HYDROGENATED VEGETABLE↵OIL", "SAL FAT", "SHEA BUTTER", "RAPESEED OIL", "PALM OIL", "SUNFLOWER OIL", "WHOLE MILK↵POWDER", "SHORTENING", "COCOA BUTTER", "SALT", "BUTTER", "YEAST", "EMULSIFIER", "POLYGLYCEROLPOLYRICINOLEANTE", "SOY LECITHIN", "ARTIFICIAL FLAVOR", "TRISODIUMPHOSPHATE", "LEAVENING", "SODIUM BICARBONATE", "CONTAINS: MILK", "WHEAT", "SOYBEANS and SHEANUT", "Manufactured in a facility that uses↵EGGS and PEANUTS"]
 match
main.js:41963 ["SUGAR"]0: "SUGAR"1: "SUGAR"length: 2__proto__: Array(0)
main.js:41961 match
main.js:41963 (2) ["SUGAR", "SUGAR"]0: "SUGAR"1: "SUGAR"length: 2__proto__: Array(0)
main.js:41968 data retrieve from object (52) ["Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar", "Oil", "Sugar"]

这是我试图循环的对象

Object
0:
resultUnsafe
:
Array(0)
resultWarning
:
Array(0)
userAllergies
:
"Oil"
userName
:
"Dad"
__proto__
:
Object
1
:
Object
resultUnsafe
:
Array(0)
resultWarning
:
Array(0)
userAllergies
:
"Sugar"
userName
:
"Mum"

如对象所示，只有2个userAllergies，这意味着长度为2但是为什么它在控制台中显示52？以及如何确保只将SUGAR推送到阵列？

Answer 1

为了使您的代码更好，您应该考虑使用更具描述性的索引变量：

@Configuration
public class QuartzBeans {

    // frequencyInSec can be read through property file of can be set setter
    // method.

    int frequencyInSec = 10;

    public void setFrequencyInSec(int frequencyInSec) {
        this.frequencyInSec = frequencyInSec;
    }

    @Autowired
    private ApplicationContext applicationContext;

    /*
     * @PostConstruct public void init() {
     * logger.info("Hello world from Spring..."); }
     */

    Logger logger = LoggerFactory.getLogger(getClass());

    @Bean
    public SpringBeanJobFactory springBeanJobFactory() {
        AutoWiringSpringBeanJobFactory jobFactory = new AutoWiringSpringBeanJobFactory();
        logger.debug("Configuring Job factory");

        jobFactory.setApplicationContext(applicationContext);
        return jobFactory;
    }

    @Bean
    public SchedulerFactoryBean scheduler(Trigger[] trigger, JobDetail[] job) {

        SchedulerFactoryBean schedulerFactory = new SchedulerFactoryBean();
        schedulerFactory.setConfigLocation(new ClassPathResource("quartz.properties"));

        logger.debug("Setting the Scheduler up");
        schedulerFactory.setJobFactory(springBeanJobFactory());
        schedulerFactory.setJobDetails(job);
        schedulerFactory.setTriggers(trigger);

        return schedulerFactory;
    }

    @Bean(name = "jobb")
    @Scope("prototype")
    public JobDetailFactoryBean jobDetail() {

        JobDetailFactoryBean jobDetailFactory = new JobDetailFactoryBean();
        jobDetailFactory.setJobClass(SampleJob.class);
        jobDetailFactory.setName("Qrtz_Job_Detail");
        jobDetailFactory.setDescription("Invoke Sample Job service...");
        jobDetailFactory.setDurability(true);
        return jobDetailFactory;
    }
    /*
     * @Autowired JobDetailFactoryBean jobDetail1;
     * 
     * @Autowired JobDetailFactoryBean jobDetail;
     * 
     * @Autowired SimpleTriggerFactoryBean trigger2;
     * 
     * @Autowired SimpleTriggerFactoryBean trigger;
     */

    @Bean(name = "jobb5")
    @Scope("prototype")
    public JobDetailFactoryBean jobDetail1() {

        JobDetailFactoryBean jobDetailFactory = new JobDetailFactoryBean();
        jobDetailFactory.setBeanName("bean33");
        jobDetailFactory.setJobClass(SampleJob2.class);
        jobDetailFactory.setName("Qrtz_Job_Detail2d");
        jobDetailFactory.setDescription("Invoke Sample Job service2...");
        jobDetailFactory.setDurability(true);
        return jobDetailFactory;
    }

    /*
     * @Bean public SimpleTriggerFactoryBean trigger2(JobDetail job) {
     * 
     * SimpleTriggerFactoryBean trigger = new SimpleTriggerFactoryBean();
     * trigger.setJobDetail(job);
     * 
     * int frequencyInSec = 4;
     * logger.info("Configuring trigger to fire every {} seconds",
     * frequencyInSec);
     * 
     * trigger.setRepeatInterval(frequencyInSec * 1000);
     * trigger.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
     * trigger.setName("Qrtz_Trigger"); return trigger; }
     */

    @Bean(name = "helldo")
    public SimpleTriggerFactoryBean trigger(JobDetail job) {

        SimpleTriggerFactoryBean trigger = new SimpleTriggerFactoryBean();
        trigger.setJobDetail(job);

        logger.info("Configuring trigger to fire every {} seconds", frequencyInSec);
        trigger.setRepeatInterval(frequencyInSec * 1000);
        trigger.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
        trigger.setName("Qrtz_Trigger2");
        return trigger;
    }

    @Bean(name = "helld2")
    public SimpleTriggerFactoryBean trigger2(JobDetail job) {

        SimpleTriggerFactoryBean trigger2 = new SimpleTriggerFactoryBean();
        trigger2.setBeanName("bean1");
        trigger2.setJobDetail(job);

        logger.info("Configuring trigger to fire every {} seconds", frequencyInSec);
        trigger2.setRepeatInterval(frequencyInSec * 1000);
        trigger2.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
        trigger2.setName("Qrtz_Trigger23");
        return trigger2;
    }
}

输入需要更长时间，但更容易调试像您所拥有的那些微妙的问题

这是适用的版本，更易于阅读：

for (var ingredientIndex = 0; ingredientIndex < ingredientList.length; ingredientIndex ++)

嵌套for循环显示重复输出

1 个答案: