用了一些spring的标签,spring:text没用,总是报错误,网上也没有一个合理的答案,我猜可能还是需要form之类的东西吧,等我研究我再补上。
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空开 for spring 标签问题
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Controller
package com.qdcl.mart.business.web;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.qdcl.mart.business.domain.Production;
import com.qdcl.mart.business.service.IProductionService;
@Controller
@RequestMapping("/")
public class ProductionController {
@Autowired
private IProductionService productionService;
@RequestMapping(value="/production",method=RequestMethod.GET)
public String getProduct(Model model){
System.out.println("fuck all");
productionService.getProductionByName("aaa");
model.addAttribute("production", productionService.getProductionByName("bbb"));
return "production";
}
@RequestMapping(value="/addProduction")
public String addProduction(Production production){
productionService.saveProduction(production);
return "production";
}
@RequestMapping(value="/editProduction")
public String editProduction(Model model){
Production production = new Production();
productionService.updateProduction(production);
return "production";
}
@RequestMapping(value="/deleteProduction")
public String deleteProduction(String productionid){
List<String> listIds = new ArrayList<String>();
listIds.add(productionid);
productionService.deleteProduction(listIds);
return "production";
}
}
这里面我一直不明白的是,当调用后台处理的方法,直接把参数写到xxx方法中即可,但是用private Production production;然后getter/setter的方法居然是null。费解,因为还没深入研究mvc的种种。所以只好又是一段空白。
Service 以及 ServiceImpl
public interface IProductionService {
public Production getProductionByName(String pName);
public boolean saveProduction(Production production);
public boolean updateProduction(Production production);
public boolean deleteProduction(List<String> listIds);
}
package com.qdcl.mart.business.service.impl;
import java.math.BigDecimal;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.qdcl.mart.business.domain.Production;
import com.qdcl.mart.business.persistence.ProductionMapper;
import com.qdcl.mart.business.service.IProductionService;
@Service
public class ProductionServiceImpl implements IProductionService {
@Autowired
private ProductionMapper productionMapper;
/**
*
* @param pName
* @return
*/
public Production getProductionByName(String pName){
Production production = productionMapper.selectProductionByName("bbb");
return production;
}
/**
* 返回整数
*/
public boolean saveProduction(Production production) {
//productionMapper.insertProduction(production);
//production.setProductionid("10000001");
//production.setPrice(new BigDecimal(1.0));
//production.setProductionname("笔记本");
//production.setDetail("IBM Thinkpad R400");
int success = productionMapper.insertProduction(production);
return success > 0;
}
/**
* 更新
*/
public boolean updateProduction(Production production) {
//production.setProductionid("10000001");
//production.setPrice(new BigDecimal(1.0));
//production.setProductionname("笔记本");
//production.setDetail("IBM Thinkpad R400");
int success = productionMapper.updateProduction(production);
return success > 0;
}
/**
* 删除
*/
public boolean deleteProduction(List<String> listIds) {
int success = 0;
for(int i =0; i < listIds.size(); i++){
success += productionMapper.deleteProduction(listIds.get(i));
}
return success > 0;
}
}
Mapper类
package com.qdcl.mart.business.persistence;
import com.qdcl.mart.business.domain.Production;
public interface ProductionMapper {
/**
* 检索一个产品
* @param pName
*/
public Production selectProductionByName(String pName);
/**
* 插入产品
* @param p
*/
public int insertProduction(Production p);
/**
*
* @param p
* @return
*/
public int updateProduction(Production p);
/**
*
* @param ids
* @return
*/
public int deleteProduction(String id);
}
Domain类,看到这个类就知道我的表结构了,太简单,sql语句就不贴了。
package com.qdcl.mart.business.domain;
import java.math.BigDecimal;
public class Production {
/**
* 产品ID
*/
private String productionid;
/**
* 产品名称
*/
private String productionname;
/**
* 价格
*/
private BigDecimal price;
/**
* 明细
*/
private String detail;
public String getProductionid() {
return productionid;
}
public void setProductionid(String productionid) {
this.productionid = productionid;
}
public String getProductionname() {
return productionname;
}
public void setProductionname(String productionname) {
this.productionname = productionname;
}
public BigDecimal getPrice() {
return price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail;
}
}