SharePoint开发TimerJob介绍

项目需要写TimerJob，以前也大概知道原理，不过，开发过程中，还是遇到一些问题，网上看了好多博客，也有写的灰常好的，不过，自己还是想再写一下，也算是给自己一个总结，也算给大家多一个参考吧。

TimerJob项目结构，主要有两个Class，一个是用来定义TimerJob功能的，一个是用来部署开发好的TimerJob的，分别继承两个不同的类。如下图，先建一个如下结构的项目：

文件描述：

TimerJob定义类：ModifyTitle.cs（继承自SPJobDefinition）

TimerJob安装类：ModifyTitleInstall.cs（继承自SPFeatureReceiver）

激活TimerJob的Feature.xml

添加强命名，因为将来生成的dll是要放到GAC里面去的

添加引用：

引用Microsoft.SharePoint.dll文件，两个Class都需要添加下面命名空间

using Microsoft.SharePoint;

using Microsoft.SharePoint.Administration;

ModifyTitleInstall类

public class ModifyTitleInstall : SPFeatureReceiver
{
const string TimerJobName = "ModifyTitleTimerJob";//TimerJob的标题
//激活TimerJob的方法
public override void FeatureActivated(SPFeatureReceiverProperties properties)
{
SPSite site = properties.Feature.Parent as SPSite;
foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)
{
//如果有相同的TimerJob，先删除
if (job.Title == TimerJobName)
{
job.Delete();
}
}
ModifyTitle modifyTitle = new ModifyTitle(TimerJobName, site.WebApplication);
SPMinuteSchedule minuteSchedule = new SPMinuteSchedule();//计时器对象
minuteSchedule.BeginSecond = 0;
minuteSchedule.EndSecond = 59;
minuteSchedule.Interval = 1;
modifyTitle.Schedule = minuteSchedule;
modifyTitle.Update();
//throw new NotImplementedException();
}
public override void FeatureDeactivating(SPFeatureReceiverProperties properties)
{
SPSite site = properties.Feature.Parent as SPSite;
foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)
{
if (job.Title == TimerJobName)
{
job.Delete();
}
}
//throw new NotImplementedException();
}
public override void FeatureInstalled(SPFeatureReceiverProperties properties)
{
//throw new NotImplementedException();
}
public override void FeatureUninstalling(SPFeatureReceiverProperties properties)
{
//throw new NotImplementedException();
}

ModifyTitle类

public class ModifyTitle : SPJobDefinition
{
public ModifyTitle():base(){}
public ModifyTitle(string TimerName, SPWebApplication webapp) : base(TimerName, webapp, null, SPJobLockType.ContentDatabase)
{
//TimerJob的标题
this.Title = "定期修改Title的TimerJob";
}
public override void Execute(Guid targetInstanceId)
{
SPWebApplication webapp = this.Parent as SPWebApplication;
SPContentDatabase contentDB=webapp.ContentDatabases[targetInstanceId];
foreach (SPItem item in contentDB.Sites[0].RootWeb.Lists["TimerJob"].Items)
{
DateTime dt = Convert.ToDateTime(item["创建时间"].ToString());
item["标题"] = "今天是这个月的第" + dt.Day.ToString() + "天";
item.Update();
}
//base.Execute(targetInstanceId);
}
}