springmvc，spring,mongodb整合程序

package com.megaeyes.entity; import org.springframework.data.annotation.Id; import org.springframework.data.mongodb.core.mapping.Document; @Document(collection="customer") public class Customer { @Id private String id; private String firstName; private String lastName; public Customer() {} public Customer(String firstName, String lastName) { this.firstName = firstName; this.lastName = lastName; } @Override public String toString() { return String.format( "Customer[id=%s, firstName='%s', lastName='%s']", id, firstName, lastName); } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } }