Spring配置ioc.xml中报错Bean name 'book01' is already used in this <beans> element

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Multiple annotations found at this line:
- Bean name 'book01' is already used in this <beans> element
- No constructor with 1 argument defined in class

错误：

<bean id="book01" class="com.panpan.beans.Book">  <!--constructor-arg: 通过构造器给bean赋值   -->  <constructor-arg name="bookname" value="红楼梦"></constructor-arg>  </bean>

public class Book {public String bookname;public String author;public  double price;public String getBookname() {return bookname;}}

正确的：

<bean id="book03" class="com.panpan.beans.Book">  <!--constructor-arg: 通过构造器给bean赋值   -->  <constructor-arg name="bookname" value="红楼梦"></constructor-arg>  <constructor-arg name="author" value="吴孟超"></constructor-arg>  <constructor-arg name="price" value="120"></constructor-arg>  </bean>

问题所在：第一赋值未完成，我有三个属性，只给一个属性赋值了，所以报错No constructor with 1 argument defined in class

第二：在ioc.xml中bean标签中id的名称出现重复的，所以报错Bean name 'book01' is already used in this <beans> element

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