Spring Boot应用Postman 404错误排查与API路径配置指南

package com.example.mdbspringbootproductorganizer.controller;

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
// ... 其他导入

@RestController
@RequestMapping("/api") // 类级别路径
public class ProductController {

    // ... 依赖注入

    @PostMapping("/addProduct") // 方法级别路径
    public String saveProduct(@RequestBody Product product) {
        // ... 保存逻辑
        return "Added product with id : " + product.getId();
    }
    // ... 其他方法
}

{
    "id": 1,
    "name": "Sample Product",
    "listedPrice": 19.99,
    "purchasePrice": 10.50,
    "condition": "New",
    "brand": "BrandX",
    "shelf": "A",
    "bin": 101
}

package com.example.mdbspringbootproductorganizer.model;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection = "ProductInventory") // 映射到MongoDB集合
public class Product {

    @Id // 标识为主键
    private int id;

    private String name;
    private double listedPrice;
    private double purchasePrice;
    private String condition;
    private String brand;
    private char shelf;
    private int bin;

    // 构造函数
    public Product(int id, String name, double listedPrice, double purchasePrice, String condition, String brand,
                   char shelf, int bin) {
        this.id = id;
        this.name = name;
        this.listedPrice = listedPrice;
        this.purchasePrice = purchasePrice;
        this.condition = condition;
        this.brand = brand;
        this.shelf = shelf;
        this.bin = bin;
    }

    // Getter和Setter方法
    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 double getListedPrice() { return listedPrice; }
    public void setListedPrice(double listedPrice) { this.listedPrice = listedPrice; }
    public double getPurchasePrice() { return purchasePrice; }
    public void setPurchasePrice(double purchasePrice) { this.purchasePrice = purchasePrice; }
    public String getCondition() { return condition; }
    public void setCondition(String condition) { this.condition = condition; }
    public String getBrand() { return brand; }
    public void setBrand(String brand) { this.brand = brand; }
    public char getShelf() { return shelf; }
    public void setShelf(char shelf) { this.shelf = shelf; }
    public int getBin() { return bin; }
    public void setBin(int bin) { this.bin = bin; }

    @Override
    public String toString() {
        return "Product [id=" + id + ", name=" + name + ", listedPrice=" + listedPrice + ", purchasePrice="
                + purchasePrice + ", condition=" + condition + ", brand=" + brand + ", shelf=" + shelf + ", bin=" + bin
                + "]";
    }
}

package com.example.mdbspringbootproductorganizer.repository;

import org.springframework.data.mongodb.repository.MongoRepository;
import com.example.mdbspringbootproductorganizer.model.Product;

public interface ProductRepository extends MongoRepository<Product, Integer> {
    // MongoRepository 提供了基本的CRUD操作，无需额外实现
}

package com.example.mdbspringbootproductorganizer.controller;

import java.util.List;
import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.example.mdbspringbootproductorganizer.model.Product;
import com.example.mdbspringbootproductorganizer.repository.ProductRepository;

@RestController
@RequestMapping("/api") // 所有API的基础路径
public class ProductController {

    @Autowired
    private ProductRepository repository;

    @PostMapping("/addProduct") // POST请求到 /api/addProduct
    public String saveProduct(@RequestBody Product product) {
        repository.save(product);
        return "Added product with id : " + product.getId();
    }

    @GetMapping("/findAllProducts") // GET请求到 /api/findAllProducts
    public List<Product> getProducts() {
        return repository.findAll();
    }

    @GetMapping("/findAllProducts/{id}") // GET请求到 /api/findAllProducts/{id}
    public Optional<Product> getProduct(@PathVariable int id) {
        return repository.findById(id);
    }

    @DeleteMapping("/delete/{id}") // DELETE请求到 /api/delete/{id}
    public String deleteBook(@PathVariable int id) {
        repository.deleteById(id);
        return "Product deleted with id: " + id;
    }
}

package com.example.mdbspringbootproductorganizer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;

@SpringBootApplication // 启用Spring Boot自动配置
@EnableMongoRepositories // 启用Spring Data MongoDB仓库
public class MdbSpringBootApplication {

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