Question

是否可以在不使用scriptlet的情况下在JSTL表达式语言（EL）中创建日期值？这是我试图重构的一些遗留代码的片段，仅用于使用EL。

<td><%=new java.text.SimpleDateFormat("MM/dd/yyyy HH:mm z").format(new java.util.Date())%></td>

显然它打印出当前的日期和时间。我知道我可以使用EL格式化日期，但是我可以使用EL获取日期吗？

Answer 1

我认为你不能在EL中这样做。但是这个怎么样，这里没有scriptlets

<jsp:useBean id="today" class="java.util.Date" scope="page" />
<fmt:formatDate value="${today}" pattern="MM.dd.yyyy" />

Answer 2

如果您使用spring webflow框架

，那将会有所帮助

如果你在flow.xml上定义它

$array = array();
$rsa = $wpdb->get_results("SELECT * from wp_letter ORDER BY l_name ASC");
foreach($rsa as $rrr)
{
array_push($array,$rrr->l_name);
}
$temp = 0;
foreach($array as $as)
{
$temp = 0;
$query = $wpdb->get_results("SELECT * FROM wp_term_taxonomy AS tx, wp_terms AS trm WHERE taxonomy = 'category' AND  trm.term_id = tx.term_id  AND name like '".$as."_%' ORDER BY name ASC");
foreach($query as $row1)
{
if($temp == 0)
{
echo '<h4>'. $as.'</h4>';
$temp = 1;
}
?>
<a class="anchor" href="<?php echo esc_url(get_category_link($row1->term_id)); ?>"><?php echo $row1->name;?></a><br/>
<?php }
} ?>

你可以得到像这样的价值

public class TestBench implements ApplicationListener {

    public static final String VERT_SHADER =
            "attribute vec2 a_position;\n" +
                    "attribute vec4 a_color;\n" +
                    "uniform mat4 u_projTrans;\n" +
                    "varying vec4 vColor;\n" +
                    "void main() {\n" +
                    "   vColor = a_color;\n" +
                    "   gl_Position =  u_projTrans * vec4(a_position.xy, 0.0, 1.0);\n" +
                    "}";

    public static final String FRAG_SHADER =
            "#ifdef GL_ES\n" +
                    "precision mediump float;\n" +
                    "#endif\n" +
                    "uniform vec4 aTest;\n" +
                    "varying vec4 vColor;\n" +
                    "void main() {\n" +
                    "   gl_FragColor = vColor;\n" +
                    "}";

    public void create() {
        mesh = new Mesh(true, MAX_VERTS, MAX_INDICES,
                new VertexAttribute(VertexAttributes.Usage.Position, POSITION_COMPONENTS, "a_position"),
                new VertexAttribute(VertexAttributes.Usage.ColorUnpacked, COLOR_COMPONENTS, "a_color"));
    }

    public void render() {
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        Gdx.gl.glClearColor(0, 0, 0, 1);

        flush();
    }

    void flush() {
        mesh.setVertices(vertices);
        mesh.setIndices(indices);
        Gdx.gl.glDepthMask(false);
        Gdx.gl.glEnable(GL20.GL_BLEND);
        Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
        shader.begin();
        shader.setUniformMatrix("u_projTrans", camera.combined);
        mesh.render(shader, GL20.GL_TRIANGLES, 0, vertices.lenght);
        shader.end();
        Gdx.gl.glDepthMask(true);
    }
}

是否可以在表达式语言中创建日期值？

2 个答案: