ajax 代码：
$.ajax({
type : "post",
async : true,
url : "${pageContext.request.contextPath}/charts",
type:"POST",
data:
{
"method":"huizhu"
},
dataType:"json",
success:function(result) {
if(result)
{
myChart.hideLoading();
myChart.setOption({ //加载数据图表
xAxis: {
data: result.xAxis
},
series: [
{
data: result.series[0].data
},
{
data: result.series[0].data
}
]
});
}
},
error : function(errorMsg) {
//请求失败时执行该函数
alert("请求数据失败!");
// myChart.hideLoading();
}
});
servlet代码：
1 private void Zhu(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
2 // TODO Auto-generated method stub
3 //response.getWriter().append("Served at: ").append(request.getContextPath());
4 req.setCharacterEncoding("utf-8");
5 resp.setContentType("text/html;charset=utf-8");
6 HttpSession session=req.getSession();
7 PrintWriter out=resp.getWriter();
8 System.out.println("AAAAAAAAAAAAA");
9 //resp.sendRedirect(req.getContextPath() + "/right.jsp");
10 List<String> xAxisData = new ArrayList<String>();
11 List<JSONObject> seriesList = new ArrayList< JSONObject>();
12
13 List<AnalysisBean> beans=new ArrayList<AnalysisBean>();
14 beans=AnalysisDao.select_answer();
15 for(AnalysisBean n:beans)
16 {
17 String str=n.getName();
18 xAxisData.add(str);
19 }
20 List<Integer> list=new ArrayList<Integer>();
21
22 for(AnalysisBean n:beans)
23 {
24 int nu=Integer.parseInt(n.getNum());
25 list.add(nu);
26 }
27
28 Series series=new Series("回答问题机构","bar",list);
29 JSONObject job = new JSONObject();
30 job.put("name", series.getName());
31 job.put("type", series.getType());
32 job.put("data",series.getData());
33 seriesList.add(job);
34
35 series=new Series("回答问题机构","line",list);
36 job = new JSONObject();
37 job.put("name", series.getName());
38 job.put("type", series.getType());
39 job.put("data",series.getData());
40 seriesList.add(job);
41
42 JSONObject jsob = new JSONObject();
43 jsob.put("xAxis", xAxisData);
44 jsob.put("series", seriesList);
45
46 resp.setCharacterEncoding("UTF-8");
47 System.out.println(jsob.toString());
48 //resp.sendRedirect(req.getContextPath() + "/admin/child/Child_11/1_Rcai.jsp");
49 resp.getWriter().write(jsob.toString());
50 }
所有代码：
html:
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html>
4 <html style="height: 100%">
5 <head>
6 <meta charset="utf-8">
7 </head>
8 <body style="height: 100%; margin: 0">
9 <div id="container" style="height: 100%"></div>
10 <script type="text/javascript" src="${pageContext.request.contextPath}/static/echarts.min.js"></script>
11 <script type="text/javascript" src="${pageContext.request.contextPath}/static/jquery-1.11.3.min.js"></script>
12 <script type="text/javascript">
13 var dom = document.getElementById("container");
14 var myChart = echarts.init(dom);
15 var app = {};
16 option = null;
17 option = {
18 title: {
19 text: ‘回答类型排序‘,
20 subtext: ‘数据为真实数据‘
21 },
22 tooltip: {
23 trigger: ‘axis‘,
24 axisPointer: {
25 type: ‘cross‘,
26 crossStyle: {
27 color: ‘#999‘
28 }
29 }
30 },
31 toolbox: {
32 feature: {
33 dataView: {show: true, readOnly: false},
34 magicType: {show: true, type: [‘line‘, ‘bar‘]},
35 restore: {show: true},
36 saveAsImage: {show: true}
37 }
38 },
39
40
41
42
43 legend: {
44 data: [‘回答问题机构‘, ‘平均温度‘]
45 },
46 xAxis: [
47 {
48 type: ‘category‘,
49 data:[],
50 axisLabel: {
51 interval: 0,
52 formatter:function(value)
53 {
54 debugger
55 var ret = "";//拼接加\n返回的类目项
56 var maxLength = 2;//每项显示文字个数
57 var valLength = value.length;//X轴类目项的文字个数
58 var rowN = Math.ceil(valLength / maxLength); //类目项需要换行的行数
59 if (rowN > 1)//如果类目项的文字大于3,
60 {
61 for (var i = 0; i < rowN; i++) {
62 var temp = "";//每次截取的字符串
63 var start = i * maxLength;//开始截取的位置
64 var end = start + maxLength;//结束截取的位置
65 //这里也可以加一个是否是最后一行的判断，但是不加也没有影响，那就不加吧
66 temp = value.substring(start, end) + "\n";
67 ret += temp; //凭借最终的字符串
68 }
69 return ret;
70 }
71 else {
72 return value;
73 }
74 }
75 },
76 grid: {
77 left: ‘10%‘,
78 bottom:‘35%‘
79 }
80
81 }
82 ],
83 yAxis: [
84 {
85 type: ‘value‘,
86
87 }
88 ],
89 series: [
90 {
91 name: ‘回答问题机构‘,
92 type: ‘bar‘,
93 data: []
94 },
95
96 {
97 name: ‘回答问题机构‘,
98 type: ‘line‘,
99 data:[]
100 }
101 ]
102 };
103
104 myChart.showLoading();
105
106 $.ajax({
107 type : "post",
108 async : true,
109 url : "${pageContext.request.contextPath}/charts",
110 type:"POST",
111 data:
112 {
113 "method":"huizhu"
114 },
115 dataType:"json",
116 success:function(result) {
117
118 if(result)
119 {
120 myChart.hideLoading();
121
122 myChart.setOption({ //加载数据图表
123 xAxis: {
124 data: result.xAxis
125 },
126 series: [
127 {
128 data: result.series[0].data
129 },
130 {
131 data: result.series[0].data
132 }
133 ]
134 });
135 }
136
137 },
138 error : function(errorMsg) {
139 //请求失败时执行该函数
140 alert("请求数据失败!");
141 // myChart.hideLoading();
142 }
143 });
144 if (option && typeof option === "object") {
145 myChart.setOption(option, true);
146 }
147
148 </script>
149 </body>
150 </html>
ECHARTS
SEWRVLET:
1 package com.servlet;
2
3 import java.io.IOException;
4 import java.io.PrintWriter;
5 import java.util.ArrayList;
6 import java.util.List;
7
8 import javax.servlet.ServletException;
9 import javax.servlet.annotation.WebServlet;
10 import javax.servlet.http.HttpServlet;
11 import javax.servlet.http.HttpServletRequest;
12 import javax.servlet.http.HttpServletResponse;
13 import javax.servlet.http.HttpSession;
14
15 import org.json.JSONArray;
16 import com.bean.AnalysisBean;
17 import com.bean.Series;
18 import com.dao.AnalysisDao;
19 import com.alibaba.fastjson.JSONObject;
20
21
22 /**
23 * Servlet implementation class charts
24 */
25 @WebServlet("/charts")
26 public class charts extends HttpServlet {
27 protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
28 // TODO Auto-generated method stub
29 req.setCharacterEncoding("utf-8");
30 String method = req.getParameter("method");
31 if ("zhu".equals(method)) {
32 Zhu(req, resp);
33 }
34
35
36 }
37 /**
38 * @see HttpServlet#HttpServlet()
39 */
40 public charts() {
41 super();
42 // TODO Auto-generated constructor stub
43 }
44
45 /**
46 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
47 */
48 private void Zhu(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
49 // TODO Auto-generated method stub
50 //response.getWriter().append("Served at: ").append(request.getContextPath());
51 req.setCharacterEncoding("utf-8");
52 resp.setContentType("text/html;charset=utf-8");
53 HttpSession session=req.getSession();
54 PrintWriter out=resp.getWriter();
55 System.out.println("AAAAAAAAAAAAA");
56 //resp.sendRedirect(req.getContextPath() + "/right.jsp");
57 List<String> xAxisData = new ArrayList<String>();
58 List<JSONObject> seriesList = new ArrayList< JSONObject>();
59
60 List<AnalysisBean> beans=new ArrayList<AnalysisBean>();
61 beans=AnalysisDao.select_answer();
62 for(AnalysisBean n:beans)
63 {
64 String str=n.getName();
65 xAxisData.add(str);
66 }
67 List<Integer> list=new ArrayList<Integer>();
68
69 for(AnalysisBean n:beans)
70 {
71 int nu=Integer.parseInt(n.getNum());
72 list.add(nu);
73 }
74
75 Series series=new Series("回答问题机构","bar",list);
76 JSONObject job = new JSONObject();
77 job.put("name", series.getName());
78 job.put("type", series.getType());
79 job.put("data",series.getData());
80 seriesList.add(job);
81
82 series=new Series("回答问题机构","line",list);
83 job = new JSONObject();
84 job.put("name", series.getName());
85 job.put("type", series.getType());
86 job.put("data",series.getData());
87 seriesList.add(job);
88
89 JSONObject jsob = new JSONObject();
90 jsob.put("xAxis", xAxisData);
91 jsob.put("series", seriesList);
92
93 resp.setCharacterEncoding("UTF-8");
94 System.out.println(jsob.toString());
95 //resp.sendRedirect(req.getContextPath() + "/admin/child/Child_11/1_Rcai.jsp");
96 resp.getWriter().write(jsob.toString());
97 }
SERVLET
原文地址：https://www.cnblogs.com/smartisn/p/12246918.html
时间： 2024-10-14 09:21:10