Hibernate4 更新部分更改的字段 hibernate update -

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Hibernate4 更新部分更改的字段 hibernate update

Hibernate 中如果直接使用

Session.update(Object o);

注意：很多人用Sesion.get()/load()查到某个对象后用Session.update()，发现自己想更新的字段更新了，但是其他的字段却变成了空，为什么呢？原因是Sesion.get()/load()和Session.update()用了不同的session.

会把这个表中的所有字段更新一遍。

比如：

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public<wbr></wbr>class<wbr>TeacherTest<wbr>{<wbr><wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:rgb(100,100,100); background-color:inherit">@Test</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit"><wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:rgb(0,102,153); background-color:inherit"><strong>public</strong></span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit"><wbr></wbr></span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:rgb(0,102,153); background-color:inherit"><strong>void</strong></span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit"><wbr>update(){<wbr><wbr></wbr></wbr></wbr></span></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>Session<wbr>session<wbr>=<wbr><wbr>HibernateUitl.getSessionFactory().getCurrentSession();<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>session.beginTransaction();<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>Teacher<wbr>t<wbr>=<wbr>(Teacher)<wbr>session.get(Teacher.<span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:rgb(0,102,153); background-color:inherit"><strong>class</strong></span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">,<wbr></wbr></span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:rgb(192,0,0); background-color:inherit">3</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">);<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>t.setName(<span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:blue; background-color:inherit">"yangtb2"</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">);<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>session.update(t);<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>session.getTransaction().commit();<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr>}<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr>

}<wbr><wbr></wbr></wbr>

Hibernate 执行的SQL语句：

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Hibernate:<wbr><wbr><wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr>update<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>Teacher<wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr>set<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:red; background-color:inherit">age</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">=?,<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:red; background-color:inherit">birthday</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">=?,<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:red; background-color:inherit">name</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">=?,<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:red; background-color:inherit">title</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">=?<wbr><wbr><wbr></wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr>where<wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; color:red; background-color:inherit">id</span><span style="word-wrap:normal; word-break:normal; line-height:17.600000381469727px; margin:0px; padding:0px; border:none; background-color:inherit">=?<wbr><wbr></wbr></wbr></span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

我们只更改了Name属性，而Hibernate 的sql语句把所有字段都更改了一次。

这样要是我们有字段是文本类型，这个类型存储的内容是几千，几万字，这样效率会很低。

那么怎么只更改我们更新的字段呢？

有三中方法：

1.XML中设置property 标签 update = "false" ，如下：我们设置 age 这个属性在更改中不做更改

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<</span>property<wbr></wbr>name="age"<wbr></wbr>update="false"></</span>property><wbr><wbr></wbr></wbr>

<p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 在Annotation中在属性GET方法上加上@Column(updatable=false) <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <div style="color:rgb(70,70,70); line-height:21.600000381469727px; font-family:Consolas,'Courier new',Courier,mono,serif; background-color:rgb(231,229,220); width:687.0499877929688px; overflow:auto; padding-top:1px; margin:18px 0px!important"> <div style="padding-left:45px"> <div style="padding:3px 8px 10px 10px; font-size:9px; line-height:normal; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; color:silver; background-color:rgb(248,248,248); border-left-width:3px; border-left-style:solid; border-left-color:rgb(108,226,108)"> [java]<a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="view plain" style="text-decoration:none; color:rgb(62,115,160)">view plain</a><a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="copy" style="text-decoration:none; color:rgb(62,115,160)">copy</a> <div></div> </div> </div> <ol start="1" style="margin:0px 0px 1px 45px!important; padding:0px; border:none; list-style:none; background-color:rgb(255,255,255); color:rgb(92,92,92)"> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> @Column(updatable=false) </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> publicintgetAge(){ </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> returnage; </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> } </li> </ol> </div> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 我们在执行 Update方法会发现，age 属性不会被更改 <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <div style="color:rgb(70,70,70); line-height:21.600000381469727px; font-family:Consolas,'Courier new',Courier,mono,serif; background-color:rgb(231,229,220); width:687.0499877929688px; overflow:auto; padding-top:1px; margin:18px 0px!important"> <div style="padding-left:45px"> <div style="padding:3px 8px 10px 10px; font-size:9px; line-height:normal; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; color:silver; background-color:rgb(248,248,248); border-left-width:3px; border-left-style:solid; border-left-color:rgb(108,226,108)"> [java]<a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="view plain" style="text-decoration:none; color:rgb(62,115,160)">view plain</a><a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="copy" style="text-decoration:none; color:rgb(62,115,160)">copy</a> <div></div> </div> </div> <ol start="1" style="margin:0px 0px 1px 45px!important; padding:0px; border:none; list-style:none; background-color:rgb(255,255,255); color:rgb(92,92,92)"> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> Hibernate: </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> update </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> Teacher </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> set </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> birthday=?, </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> name=?, </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> title=? </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> where </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> id=? </li> </ol> </div> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 缺点：不灵活···· <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 2.第2种方法··使用XML中的dynamic-update="true" <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <div style="color:rgb(70,70,70); line-height:21.600000381469727px; font-family:Consolas,'Courier new',Courier,mono,serif; background-color:rgb(231,229,220); width:687.0499877929688px; overflow:auto; padding-top:1px; margin:18px 0px!important"> <div style="padding-left:45px"> <div style="padding:3px 8px 10px 10px; font-size:9px; line-height:normal; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; color:silver; background-color:rgb(248,248,248); border-left-width:3px; border-left-style:solid; border-left-color:rgb(108,226,108)"> [xhtml]<a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="view plain" style="text-decoration:none; color:rgb(62,115,160)">view plain</a><a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="copy" style="text-decoration:none; color:rgb(62,115,160)">copy</a> <div></div> </div> </div> <ol start="1" style="margin:0px 0px 1px 45px!important; padding:0px; border:none; list-style:none; background-color:rgb(255,255,255); color:rgb(92,92,92)"><li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> <classname="com.sccin.entity.Student"table="student"dynamic-update="true"> </li></ol> </div> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> OK,这样就不需要在字段上设置了。 <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 但这样的方法在Annotation中没有 <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 3.第三种方式：使用HQL语句（灵活，方便） <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 使用HQL语句修改数据 <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <div style="color:rgb(70,70,70); line-height:21.600000381469727px; font-family:Consolas,'Courier new',Courier,mono,serif; background-color:rgb(231,229,220); width:687.0499877929688px; overflow:auto; padding-top:1px; margin:18px 0px!important"> <div style="padding-left:45px"> <div style="padding:3px 8px 10px 10px; font-size:9px; line-height:normal; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; color:silver; background-color:rgb(248,248,248); border-left-width:3px; border-left-style:solid; border-left-color:rgb(108,226,108)"> [java]<a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="view plain" style="text-decoration:none; color:rgb(62,115,160)">view plain</a><a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="copy" style="text-decoration:none; color:rgb(62,115,160)">copy</a> <div></div> </div> </div> <ol start="1" style="margin:0px 0px 1px 45px!important; padding:0px; border:none; list-style:none; background-color:rgb(255,255,255); color:rgb(92,92,92)"> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> publicvoidupdate(){ </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> Sessionsession=HibernateUitl.getSessionFactory().getCurrentSession(); </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> session.beginTransaction(); </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> Queryquery=session.createQuery("updateTeachertsett.name='yangtianb'whereid=3"); </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> query.executeUpdate(); </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> session.getTransaction().commit(); </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> } </li> </ol> </div> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> Hibernate 执行的SQL语句： <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <div style="color:rgb(70,70,70); line-height:21.600000381469727px; font-family:Consolas,'Courier new',Courier,mono,serif; background-color:rgb(231,229,220); width:687.0499877929688px; overflow:auto; padding-top:1px; margin:18px 0px!important"> <div style="padding-left:45px"> <div style="padding:3px 8px 10px 10px; font-size:9px; line-height:normal; font-family:Verdana,Geneva,Arial,Helvetica,sans-serif; color:silver; background-color:rgb(248,248,248); border-left-width:3px; border-left-style:solid; border-left-color:rgb(108,226,108)"> [xhtml]<a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="view plain" style="text-decoration:none; color:rgb(62,115,160)">view plain</a><a target="_blank" href="http://blog.csdn.net/Baykermr/article/details/5359913#" title="copy" style="text-decoration:none; color:rgb(62,115,160)">copy</a> <div></div> </div> </div> <ol start="1" style="margin:0px 0px 1px 45px!important; padding:0px; border:none; list-style:none; background-color:rgb(255,255,255); color:rgb(92,92,92)"> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> Hibernate: </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> update </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> Teacher </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> set </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> name='yangtianb' </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; background-color:rgb(248,248,248)"> where </li> <li style="margin:0px!important; padding:0px 3px 0px 10px!important; border-width:0px 0px 0px 3px; border-style:none none none solid; border-left-color:rgb(108,226,108); list-style:decimal-leading-zero outside; color:inherit"> id=3 </li> </ol> </div> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:26px; font-size:14.399999618530273px; color:rgb(51,51,51); font-family:Arial"> 这样就只更新了我们更新的字段·····

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