資訊專欄INFORMATION COLUMN
摘要：初步使用注入對象沿用上次的工程新建兩個類和修改其中用來標(biāo)記注入，將注入到中執(zhí)行結(jié)果如下采用注解方式注入對象修改和，加入注解，并賦予默認(rèn)值為類加上注解，即表明此類是為類加上注解，即表明此類是修改，刪除所有子標(biāo)簽，加入自動掃描執(zhí)行結(jié)果
Spring初步使用 注入對象
沿用上次的工程
新建兩個類
Category和Product
Category.java
public class Category {
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;
}
private int id;
private String name="category 1";
}
Product.java
public class Product {
private int id;
private String name="product 1";
private Category category;
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 Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
}
修改spring-config.xml
其中ref用來標(biāo)記注入，將product注入到category中
執(zhí)行結(jié)果如下：
修改product和category，加入注解，并賦予默認(rèn)值
//為Product類加上@Component注解，即表明此類是bean
@Component("p")
public class Product {
private int id;
private String name="product 1";
@Autowired
private Category category;
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 Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
}
//為Category 類加上@Component注解，即表明此類是bean
@Component("c")
public class Category {
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;
}
private int id;
private String name="category 1";
}
修改spring-config.xml，刪除所有子標(biāo)簽，加入自動掃描
