ssm框架(Spring Springmvc Mybatis框架)整合及案例增删改查

三大框架介绍

ssm框架是由Spring springmvc和Mybatis共同组成的框架。Spring和Springmvc都是spring公司开发的,因此他们之间不需要整合。也可以说是无缝整合。mybatis公司开发的mybatis,因为需要和Spring整合,但是他们之间是有缝的。因此mybatis公司就做出了jar包 mybatis-spring的核心整合包。

Q:什么叫无缝整合,有缝整合?
A:最方便的理解就是有Jar包就是有缝,没有jar包就是无缝。

整合准备条件

三个文件:applicationContext.xml springmvc.xml mybatis.xml (名字一般都这样起,因为我们还需要对他们进行配置,需要用文件名,同时也能让其他人明白)
下图是项目的架构图
ssm框架(Spring Springmvc Mybatis框架)整合及案例增删改查_第1张图片

applicationContext.xml配置文件

里面包含数据源的读取properties,配置dataSource,事务管理对象transactionManager、
sqlsession工厂SqlSessionFactory 以及Mapper扫描(xml名和接口名相同)。主要负责与mybatis整合



	
	
	

	
	
		
		
		
		
	
	
		
	
	
	
	
		
		
		
		
	
	
	
		
		
	

Springmvc.xml
主要负责注解,springmvc的三大组件(处理器映射器、处理器适配器、视图解析器,这三个有默认的类,但是已经过时了。)



	
	
	
	
	
	
	
	
		
		
		
		
		

mybatis.xml
mybatis可以只配一个别名,大小写不敏感,可以不配置,但是不配置的话必须使用包名+类名。





	



web.xml
ssm配置完了,但是tomcat启动后并不会对Spring的框架进行读取,因此我们还需要配置一个监听器。



  ssmDemo
  
    index.jsp
  
  
  
  
	
		contextConfigLocation
		classpath:applicationContext.xml
	

	
	
		org.springframework.web.context.ContextLoaderListener
	

	
	
		encoding	
		org.springframework.web.filter.CharacterEncodingFilter
		
  		encoding
  		UTF-8
  	
	
	
		encoding
		/*
	

	
	
		ssm-crm
		org.springframework.web.servlet.DispatcherServlet
		
			contextConfigLocation
			classpath:springmvc.xml
		
		
		
		
		1
	
	
		ssm-crm
		
		/
	

在这里ssm的三大框架基本上就整合完毕了。
下面这个案例是一个客户的增删改查的分页小Demo
CustomerMapper.xml(写sql文件的,必须和CustomerMapper.java的接口文件在一个包下,并且名字相同)



 
	
	
	
	
	
	
		update customer set cust_name = #{cust_name} ,
		cust_source = #{cust_source} ,
		cust_industry = #{cust_industry} ,
		cust_level = #{cust_level} ,
		cust_linkman = #{cust_linkman} ,
		cust_phone = #{cust_phone} ,
		cust_mobile = #{cust_mobile} ,
		cust_zipcode = #{cust_zipcode} ,
		cust_address = #{cust_address} ,
		cust_createtime = #{cust_createtime}
		
			cust_id = #{cust_id}
		
		
	
	
		delete from customer 
		
			cust_id = #{cust_id}
		
	
	
		
			
				AND a.cust_name LIKE '%${custName}%'
			
			
				AND a.cust_source = #{custSource}
			
			
				AND a.cust_industry = #{custIndustry}
			
			
				AND a.cust_level = #{custLevel}
			
		
	

CustomerMapper.java(接口文件)(写sql文件的,必须和CustomerMapper.xml文件在一个包下,并且名字相同,两个文件遵循4大原则{名字相同,xml的mapper namespace属性指向接口,入参类型相同,出参类型相同})

package cn.tsu.ssm.dao;

import java.util.List;

import cn.tsu.common.utils.Page;
import cn.tsu.ssm.pojo.Customer;
import cn.tsu.ssm.pojo.Queryvo;

public interface CustomerMapper {

	public List findBaseDictByCode(String code);
	
	public List findCustomerByPage(Queryvo vo);
	
	public Integer findCustomerCount(Queryvo vo);
	
	public void editCustomer(Customer customer);
	
	public Customer edit(Integer id );
	
	public void deleteByid (Integer id);
}

service层接口略


service实现类
service层主要写了分页的业务

package cn.tsu.ssm.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import cn.tsu.common.utils.Page;
import cn.tsu.ssm.dao.CustomerMapper;
import cn.tsu.ssm.pojo.Customer;
import cn.tsu.ssm.pojo.Queryvo;

@Service
@Transactional(readOnly=false,isolation=Isolation.READ_COMMITTED,propagation=Propagation.REQUIRED)
public class CustomerServiceImpl implements CustomerService{
	
	@Autowired
	private CustomerMapper cm;

	public List findCustomer(String code) {
		return cm.findBaseDictByCode(code);
	}

	public Page findCustomerByPage(Queryvo vo) {
		// TODO Auto-generated method stub
		vo.setStart((vo.getPage()-1)*vo.getRows());
		List findCustomerByPage = cm.findCustomerByPage(vo);
		Integer total = cm.findCustomerCount(vo);
		Page page = new Page(total,findCustomerByPage,vo.getPage(),vo.getRows());
		return page;
		
	}

	public void editCustomer(Customer customer) {
		cm.editCustomer(customer);
	}

	public Customer edit(Integer id) {
		// TODO Auto-generated method stub
		return cm.edit(id);
	}

	public void deleteByid(Integer id) {
		cm.deleteByid(id);
	}

}

DemoController层
主要写了web层,接收前端传递过来的数据,post,get,json等

package cn.tsu.ssm.controller;

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.ResponseBody;

import cn.tsu.common.utils.Page;
import cn.tsu.ssm.pojo.Customer;
import cn.tsu.ssm.pojo.Queryvo;
import cn.tsu.ssm.service.CustomerService;

@Controller
public class DemoController {
	
	@Autowired
	private CustomerService cs;

	@RequestMapping("listUi")
	public String listUi(Model model,Queryvo vo) {
		
		List fromType = cs.findCustomer("002");
		List industryType = cs.findCustomer("001");
		List levelType = cs.findCustomer("006");
		model.addAttribute("fromType", fromType);
		model.addAttribute("industryType", industryType);
		model.addAttribute("levelType", levelType);
		
		//分页查询
		Page page = cs.findCustomerByPage(vo);
		model.addAttribute("page", page);
		model.addAttribute("custName", vo.getCustName());
		model.addAttribute("custSource", vo.getCustSource());
		model.addAttribute("custIndustry", vo.getCustIndustry());
		model.addAttribute("custLevel", vo.getCustLevel());
		return "customer";
	}
	
	@RequestMapping("edit")
	public @ResponseBody
	Customer edit(Model model, Integer id) {
		Customer customer = cs.edit(id);
		return customer;
		
	}
	
	@RequestMapping("update")
	public @ResponseBody
	String update(Customer customer) {
		cs.editCustomer(customer);
		return "ok";//这里回复null前端也有响应
	}
	
	@RequestMapping(value="delete")
	public @ResponseBody
	String delete (Integer id) {
		System.out.println(id);
		cs.deleteByid(id);
		return null;
	}
	
}

下面把工具类的代码也写出来
page.java

package cn.tsu.common.utils;

import java.util.List;

import cn.tsu.ssm.pojo.Customer;

public class Page {
    
	//一共有多少数据
	private int total;
	//当前页
	private int page;
	//当页显示多少数据
	private int size;
	//数据
    private List rows;
	public Page(Integer total2, List findCustomerByPage, Integer page2, Integer rows2) {
		this.total=total2;
		this.rows=findCustomerByPage;
		this.page = page2;
		this.size=rows2;
	}
	public int getTotal() {
		return total;
	}
	public void setTotal(int total) {
		this.total = total;
	}
	public int getPage() {
		return page;
	}
	public void setPage(int page) {
		this.page = page;
	}
	public int getSize() {
		return size;
	}
	public void setSize(int size) {
		this.size = size;
	}
	public List getRows() {
		return rows;
	}
	public void setRows(List rows) {
		this.rows = rows;
	}
    
	
    
}

NavigationTag.java

package cn.tsu.common.utils;

import java.io.IOException;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

/**
 * 显示格式 上一页 1 2 3 4 5 下一页
 */
public class NavigationTag extends TagSupport {
    static final long serialVersionUID = 2372405317744358833L;
    
    /**
     * request 中用于保存Page 对象的变量名,默认为“page”
     */
    private String bean = "page";
    
    /**
     * 分页跳转的url地址,此属性必须
     */
    private String url = null;
    
    /**
     * 显示页码数量
     */
    private int number = 5;
    
    @Override
    public int doStartTag() throws JspException {
        JspWriter writer = pageContext.getOut();
        HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
        Page page = (Page)request.getAttribute(bean); 
        if (page == null) 
            return SKIP_BODY;
        url = resolveUrl(url, pageContext);
        try {
        	//计算总页数
        	int pageCount = page.getTotal() / page.getSize();
        	if (page.getTotal() % page.getSize() > 0) {
        		pageCount++;
        	}
        	writer.print("");
        } catch (IOException e) {
            e.printStackTrace();
        }
        return SKIP_BODY;
    }
    
    private String append(String url, String key, int value) {

        return append(url, key, String.valueOf(value));
    }
    
    /**
     * 为url 参加参数对儿
     * 
     * @param url
     * @param key
     * @param value
     * @return
     */
    private String append(String url, String key, String value) {
        if (url == null || url.trim().length() == 0) {
            return "";
        }

        if (url.indexOf("?") == -1) {
            url = url + "?" + key + "=" + value;
        } else {
            if(url.endsWith("?")) {
                url = url + key + "=" + value;
            } else {
                url = url + "&" + key + "=" + value;
            }
        }
        
        return url;
    }
    
    /**
     * 为url 添加翻页请求参数
     * 
     * @param url
     * @param pageContext
     * @return
     * @throws javax.servlet.jsp.JspException
     */
    private String resolveUrl(String url, javax.servlet.jsp.PageContext pageContext) throws JspException{
    	//UrlSupport.resolveUrl(url, context, pageContext)
    	Map params = pageContext.getRequest().getParameterMap();
    	for (Object key:params.keySet()) {
    		if ("page".equals(key) || "rows".equals(key)) continue;
    		Object value = params.get(key);
    		if (value == null) continue;
    		if (value.getClass().isArray()) {
    			url = append(url, key.toString(), ((String[])value)[0]);
    		} else if (value instanceof String) {
    			url = append(url, key.toString(), value.toString());
    		}
    	}
        return url;
    }
    
    

    /**
     * @return the bean
     */
    public String getBean() {
        return bean;
    }

    /**
     * @param bean the bean to set
     */
    public void setBean(String bean) {
        this.bean = bean;
    }

    /**
     * @return the url
     */
    public String getUrl() {
        return url;
    }

    /**
     * @param url the url to set
     */
    public void setUrl(String url) {
        this.url = url;
    }

    public void setNumber(int number) {
        this.number = number;
    }
    
}

commons.tlb
自己写的标签库,只需要在jsp页面引入即可使用,主要用在jsp页面的分页。
该文件放到WEB-INF下即可
ssm框架(Spring Springmvc Mybatis框架)整合及案例增删改查_第2张图片




	2.0
	1.2
	common
	http://cn.tsu.xiaofeng/common/
	Common Tag
	Common Tag library

	
		page
		cn.tsu.common.utils.NavigationTag
		JSP
		create navigation for paging
		
			bean
			true
		
		
			number
			true
		
		
			url
			true
			true
		
	

完 我把资源上传到文件库中,如果大家有需要代码的,可以自行下载。因为需要设置分,因此就设置1分啦。!!!下载

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