前言
当在我们注册用户时，如果给前台的提示是用户名重复并且用户名太长时，就会要往action里面添加多个errors，这时到前台怎么把它依次拿出来
下面话不多说了，来一起看看详细的介绍吧
方法如下
①找到配置文件
struts2-core-2.3.35.jar/template/simple/fielderror.ftl（不同版本的文件路径大同小异）
②创建新的文件包并拷贝文件
在项目根目录下创建template.simple并将fielderror.ftl拷贝过来
此时根目录下的fielderror.ftl文件优先权大于默认的fielderror.ftl文件
③修改拷贝过来的fielderror.ftl文件
修改前文件如下
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
<#--
/*
* $id$
*
* licensed to the apache software foundation (asf) under one
* or more contributor license agreements. see the notice file
* distributed with this work for additional information
* regarding copyright ownership. the asf licenses this file
* to you under the apache license, version 2.0 (the
* "license"); you may not use this file except in compliance
* with the license. you may obtain a copy of the license at
*
* http://www.apache.org/licenses/license-2.0
*
* unless required by applicable law or agreed to in writing,
* software distributed under the license is distributed on an
* "as is" basis, without warranties or conditions of any
* kind, either express or implied. see the license for the
* specific language governing permissions and limitations
* under the license.
*/
-->
<#if fielderrors??><#t/>
<#assign ekeys = fielderrors.keyset()><#t/>
<#assign ekeyssize = ekeys.size()><#t/>
<#assign donestartultag=false><#t/>
<#assign doneendultag=false><#t/>
<#assign havematchederrorfield=false><#t/>
<#if (fielderrorfieldnames?size > 0) ><#t/>
<#list fielderrorfieldnames as fielderrorfieldname><#t/>
<#list ekeys as ekey><#t/>
<#if (ekey = fielderrorfieldname)><#t/>
<#assign havematchederrorfield=true><#t/>
<#assign evalue = fielderrors[fielderrorfieldname]><#t/>
<#if (havematchederrorfield && (!donestartultag))><#t/>
<ul<#rt/>
<#if parameters.id?has_content>
id="${parameters.id?html}"<#rt/>
</#if>
<#if parameters.cssclass?has_content>
class="${parameters.cssclass?html}"<#rt/>
<#else>
class="errormessage"<#rt/>
</#if>
<#if parameters.cssstyle?has_content>
style="${parameters.cssstyle?html}"<#rt/>
</#if>
>
<#assign donestartultag=true><#t/>
</#if><#t/>
<#list evalue as eeachvalue><#t/>
<li><span><#if parameters.escape>${eeachvalue!?html}<#else>${eeachvalue!}</#if></span></li>
</#list><#t/>
</#if><#t/>
</#list><#t/>
</#list><#t/>
<#if (havematchederrorfield && (!doneendultag))><#t/>
</ul>
<#assign doneendultag=true><#t/>
</#if><#t/>
<#else><#t/>
<#if (ekeyssize > 0)><#t/>
<ul<#rt/>
<#if parameters.cssclass?has_content>
class="${parameters.cssclass?html}"<#rt/>
<#else>
class="errormessage"<#rt/>
</#if>
<#if parameters.cssstyle?has_content>
style="${parameters.cssstyle?html}"<#rt/>
</#if>
>
<#list ekeys as ekey><#t/>
<#assign evalue = fielderrors[ekey]><#t/>
<#list evalue as eeachvalue><#t/>
<li><span><#if parameters.escape>${eeachvalue!?html}<#else>${eeachvalue!}</#if></span></li>
</#list><#t/>
</#list><#t/>
</ul>
</#if><#t/>
</#if><#t/>
</#if><#t/>
|
将<ul></ul>、<li></li>、<span></span>删除
修改后文件如下
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
<#--
/*
* $id$
*
* licensed to the apache software foundation (asf) under one
* or more contributor license agreements. see the notice file
* distributed with this work for additional information
* regarding copyright ownership. the asf licenses this file
* to you under the apache license, version 2.0 (the
* "license"); you may not use this file except in compliance
* with the license. you may obtain a copy of the license at
*
* http://www.apache.org/licenses/license-2.0
*
* unless required by applicable law or agreed to in writing,
* software distributed under the license is distributed on an
* "as is" basis, without warranties or conditions of any
* kind, either express or implied. see the license for the
* specific language governing permissions and limitations
* under the license.
*/
-->
<#if fielderrors??><#t/>
<#assign ekeys = fielderrors.keyset()><#t/>
<#assign ekeyssize = ekeys.size()><#t/>
<#assign donestartultag=false><#t/>
<#assign doneendultag=false><#t/>
<#assign havematchederrorfield=false><#t/>
<#if (fielderrorfieldnames?size > 0) ><#t/>
<#list fielderrorfieldnames as fielderrorfieldname><#t/>
<#list ekeys as ekey><#t/>
<#if (ekey = fielderrorfieldname)><#t/>
<#assign havematchederrorfield=true><#t/>
<#assign evalue = fielderrors[fielderrorfieldname]><#t/>
<#if (havematchederrorfield && (!donestartultag))><#t/>
<#assign donestartultag=true><#t/>
</#if><#t/>
<#list evalue as eeachvalue><#t/>
<#if parameters.escape>${eeachvalue!?html}<#else>${eeachvalue!}</#if>
</#list><#t/>
</#if><#t/>
</#list><#t/>
</#list><#t/>
<#if (havematchederrorfield && (!doneendultag))><#t/>
<#assign doneendultag=true><#t/>
</#if><#t/>
<#else><#t/>
<#if (ekeyssize > 0)><#t/>
<#list ekeys as ekey><#t/>
<#assign evalue = fielderrors[ekey]><#t/>
<#list evalue as eeachvalue><#t/>
<#if parameters.escape>${eeachvalue!?html}<#else>${eeachvalue!}</#if>
</#list><#t/>
</#list><#t/>
</#if><#t/>
</#if><#t/>
</#if><#t/>
|
重启tomcat
总结
以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对服务器之家的支持。
原文链接：http://www.cnblogs.com/zhanghongcan/p/9753917.html