小编BMW*_*W83的帖子

我有一个与Personne班有关的项目

package com.example.entities;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@SuppressWarnings("serial")
@Entity  
public class Personne implements Serializable {

    @Id
    @GeneratedValue
    private Long id;
    @Column(length = 80, name = "NOM")
    private String nom;
    @Column(length = 80, name = "PRENOM")
    private String prenom;
    @Column(length = 80, name = "ADRESSE")
    private String adresse;
    @Column(length = 80, name = "EMAIL")
    private String email;
    @Column(length = 80, name = "TELEPHONE")
    private String telephone;

    public Long getId() {
        return id;
    }

    public void …

我的项目角度有问题，但我不知道问题出在哪里。我想在我的项目中添加一项服务，因为我像这样定义了该服务

import {Injectable} from "@angular/core";
import {Http} from "@angular/http";

@Injectable

export class ContactService{

constructor(public http: Http){

}
  getContacts(){
     return this.http.get("http://localhost:8080/findPersons? 
      mc=wa&page=1&size=6").map(resp => resp.json());
}
}

在我的 IDE 控制台中，我在 src/contact.service/contacts.service.ts(4,1) 中出现此错误：错误 TS1238：作为表达式调用时无法解析类装饰器的签名。

我也有同样的错误

有谁可以帮助我并谢谢你:)

我想比较两个字符串，例如 str="abc" 和 str2="bca" 或 str3="bac" 都是双胞胎（包含相同的字符）我有这个代码

package com.hr.access.chaine;

public class ChaineCaractere {

public static void main(String[] args) {
    System.out.println(Solution.isTwin("hello", "world"));// false
    System.out.println(Solution.isTwin("abc", "cab"));// true
    System.out.println(Solution.isTwin("Lookout", "outlook"));// true
}  }

和 Solution.isTwins 的另一个类在那里

package com.hr.access.chaine;

public class Solution {

public static boolean isTwin(String a, String b) {
    int longA = a.length();
    int longB = b.length();
    boolean retourneValeur;
    if (longA != longB) {
        System.out.println("Le deux chaine ne sont pas jumeau");
        retourneValeur = false;
    } else {

        // I want to add …

我使用 spring-boot 进行项目，我使用的是 spring 2.0.5.RELEASE 版本。当我为 getter 和 setter 以及带和不带字段的控制器简化我的工作时，我想使用 Lombok 这是我的 pom.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
    http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>hr.access</groupId>
<artifactId>ms-EtudiantS-Formation</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>ms-EtudiantS-Formation</name>
<description>Demo project for Spring Boot</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.5.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF- 
     8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency> …